Science

Most popular science questions.
  1. Science

    1) Which of the following is true about photosynthesis? A. It is an exothermic reaction B.It is a endothermic reaction ***** C.It produces carbon dioxide D. It occurs in animals 2) Atomic Theory is A.Subject to change if new information is discovered B.A

    asked by noname on November 11, 2015
  2. science PLEASE CHECK MY ANSWERS

    1. where does the conversation current in the mantle obtain its heat energy? a. earths core and crust b. earths mantle c. earths core and mantle*** d. earths mantle 2. How do convection currents cause movement of earth's plates? a. The weathering of rocks

    asked by what on May 7, 2014
  3. Weird question science

    which of these body systems performs the function of getting rid of chemical waste? a. immune b.nervous c.skeletal d.uninary d?

    asked by softball lover on November 7, 2016
  4. Science help ASAP

    1. In which way does the circulatory system rely on the skeletal system? Glucose is secreted by compact bone as an energy source for blood. Spongy bone stores minerals needed by blood cells. Bones provide a source of oxygen to blood. Blood cells are

    asked by Anonymous on May 5, 2014
  5. science

    Which of the following is true about the electric charges on the objects below?

    asked by HEY:)) on April 20, 2017
  6. Science

    A dog is trained to sit and shake hands. These traits are most likely A. Inherited B. Not inheited C. Not aquried D. Innate Is the answer B?

    asked by Anonymous on October 15, 2014
  7. Science

    What wave property is labeled X? a. Frequency b. amplitude c. wavelength d. wave speed Is it C? Thank you!

    asked by Jane Doe on March 10, 2016
  8. Science--HELP!!

    1. In which of the following situations is a sound wave most likely to travel through air? A) An alarm clock rings in a vacuum. B) A giant star explodes. C) A grasshopper eats a leaf. D) An astronaut uses tools in space. 2. Which of the following factors

    asked by Jasmine on December 9, 2013
  9. Science

    1. How does groundwater cause erosion and deposition? a. When acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves. *** b. When a river overflows, it moves downhill, resulting in the formation of caves. c. When

    asked by Hannah on March 3, 2014
  10. Science

    Which of the following explains why a bone in a bird’s wing is homologous to a bone in a lizard’s front leg? a.The bones in the two species provide for the same type of motion. b.The bones in the two species are both vestigial structures. c.The two

    asked by Anonymous on November 10, 2013
  11. Science

    A student mixed two clear liquids together in a beaker and a solid precipitate formed. His data is shown in the table below. Liquid reactant A = 10 g Liquid reactant B = 17 g Beaker + solid product= 32 g What is the mass of the beaker? A. 5 g B. 10 g C. 15

    asked by Callie on November 7, 2014
  12. Science

    Structure, Function, Information Processing Test: Unit2 1. Enzymes are important because they: contain water speed up chemical reactions***** contain genetic material help the cell maintain its shape. 2. Which term refers to the diffusion of water through

    asked by QuestionInator on December 8, 2015
  13. science

    A student mixed two clear liquids together in a beaker and a solid precipitate formed. His data is shown in the table below. Liquid reactant A = 10 g Liquid reactant B = 17 g Beaker + solid product= 32 g What is the mass of the beaker? A. 5 g B. 10 g C. 15

    asked by Oscar on March 30, 2015
  14. science

    which of the following is true about photosynthesis

    asked by Erica on October 6, 2016
  15. science help asap!!!

    Hi, can someone check my answers asap!!? i am on a deadline!! 1. What doe the notation TT mean to geneticists? (1 point) two dominant alleles heterozygous alleles at least one dominant allele one dominant and one recessive allele 2. An organisms genotype

    asked by TTR+S<3 on January 16, 2014
  16. Science

    How does DNA determine a trait such as eye color? A. DNA codes for proteins that determine eye color. B. DNA code for mRNA that detemines eye color. C. DNA interacts with proteins to control eye color. D. DNA contains pigments which make up eye color. Is

    asked by Anonymous on October 8, 2014
  17. science

    Which of the following would be true for the charged particles below ?

    asked by kayli on October 16, 2015
  18. Science

    If an animal is an ectotherm, it has 1.a skeleton on the outside of its body. 2.a skeleton on the inside of its body. 3.a body that regulates its own internal temperature.****** 4.a body that does not produce much internal heat.

    asked by Annie:~) on October 21, 2017
  19. Science

    Which process of the carbon cycle is responsible for the release of carbon at the power plant, as shown by the arrow? A. combustion B. photosynthesis C. digestion D. decomposition @Ms.Sue can you check my answer I think the answer is A.

    asked by Ava on November 7, 2015
  20. Science~

    Please! Please! Please help me really quick! Pleae check my answers! 1. A population of oak trees growing in a region in Canada experiences a change in climate to much colder temperatures and much drier conditions than they have had for many decades. What

    asked by Marie on October 9, 2013
  21. please help me!! with this science!!!!!

    Multiple Choice 1. Which sphere of the Earth system contains all living organisms? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following statements best describes the geosphere? (1 point) the sphere that consists of solid rock

    asked by josh on January 7, 2014
  22. science

    An advantage of using an electromagnet, shown on the crane in the image below, instead of a regular magnet to move cars in a junkyard is that an electromagnet can easily be turned on and off.

    asked by new moon on May 2, 2018
  23. Environmental Science

    1. A prion is an infectious, self-reproducing protein structure. True X False 2. As one organism eats another, toxins can be spread throughout the food chain. True False x 3. The problem with DDT in the environment is that it decomposes quickly. True False

    asked by Steve on October 10, 2017
  24. science

    Which term refers to the diffusion of water through a membrane? A. osmosis B. engulfing C. active transport D. facilitated transport

    asked by I NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! on May 23, 2014
  25. science

    the current atomic model would be revised if 1)better microscopes were being used to study its structure. 2)better microscopes are invented in the future. 3)new information about an atoms structure is discovered.*** 4) a new element is discovered in the

    asked by alainaforysthe on October 9, 2017
  26. science

    An outfielder throws a .150 kg baseball at a speed of 40.0 m/s and an initial angle of 30 degrees. What is the kinetic energy of the ball at the highest point of its motion. Work: 0^2=40^2+(.002)(-9.8m/s^2)(d) d=81.6m W=(.150kg)(9.8m/s^2)(cos30)(81.6m)

    asked by Anonymous on October 22, 2007
  27. Science Help!

    Two nonmetals from Group 16 are likely to form a(n) A. Metalic bond. B. Double bond C. Ionic bond D. Covalent bond Is the answer C? Thank you

    asked by Callie on November 12, 2014
  28. Science

    1. The line on the graph below represents an object that is: A: Moving at a constant speed B: Increasing its speed C: Decreasing it's speed D: Not moving at all 2. To determine the acceleration of an object moving in a straight line, you must calculate the

    asked by Reeces on February 23, 2017
  29. Science

    1. granite lasts a long time when it is used for building in areas where

    asked by Help12 on March 3, 2017
  30. Science

    1.If an animal is an ectotherm, It has? A. A skeleton on the outside of its body B. A skeleton on the inside of its body C. A body that regulates its own internal temperature D. A body that does not produce much internal heat

    asked by Grace on January 1, 2018
  31. Science

    suppose that you swat a bee it stings you. jerking your hand away from the bee is a... A) Motor Neuron B) Reflex** C) Stimulus D) Voluntary Motion

    asked by Cyborg_DRAGon on October 19, 2016
  32. Science HELP PLS

    1. What is a Genetic Mutation? A. the process of decreasing chromosome numbers to half of what the parent cell has B. the copying of DNA to form identical daughter cells C. a permanent change in an organism’s genetic code D. a fusion of egg and sperm

    asked by Jia on November 8, 2016
  33. Science Chemical Reactions

    1. The current atomic model would be revised if  (1 point) A• better microscopes were being used to study its structure. B• better microscopes are invented in the future. C• new information about an atom’s structure is discovered. C• a new

    asked by John Smith on March 8, 2018
  34. Science

    Enzymes are important because they A)Contain Water B)Speed up chemical reactions C)Contain genetic material D)Help the cell maintain its shape

    asked by Help Me Plz on October 17, 2017
  35. Science

    The Periodic Table 1) What conclusions can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their properties? :Properties of elements are related to atomic numbers.*** :Properties of

    asked by TheLOUDEST_0430 on March 9, 2015
  36. science

    which of the following boxes below represent a stable system and describe how a disturbance to this box would affect it and use the terms center of mass and equilibrium in your response.

    asked by looloo on December 11, 2015
  37. Science Please Help!!!

    State how matter moves through the biosphere. State how energy moves through the biosphere. Explain each statement using examples to illustrate your explanation. What are some examples of each way of movement through the biosphere? Can someone please

    asked by Scarlet on April 9, 2016
  38. science

    Enzymes are important because they A. contain water. B. speed up chemical reactions. C. contain genetic material. D. help the cell maintain its shape.

    asked by I NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! on May 23, 2014
  39. please help me!! with this science!!!!!

    Multiple Choice: 1. If a kestrel eats a mouse that eats grass, the kestrel is a (1 point) producer. second-level consumer. first-level consumer. decomposer. 2. Which of the following best explains why a species of lizard is able to live in the desert but

    asked by josh on December 11, 2013
  40. Science

    How do layers B and D compare in age? If rock layers between B and D have eroded away, what is the boundary between B and D called? My answer: Layer D is older than layer B. If rock layers between B and D have eroded away, the boundary between B and D are

    asked by rAnDoM on October 29, 2015
  41. Science

    Cave ecosystems are characterized by extremely low light levels. What role does photosynthesis play in a cave ecosystem? 1: Photosynthesis is essential because it provides the original energy source for all food chains in this ecosystem. 2: photosynthesis

    asked by Anonymous on March 15, 2014
  42. Science

    Studies conducted in England during the Industrial Revolution have shown that children born to poor families were, on average, shorter than those born to wealthier parents. The most likely explanation for this difference in height is a difference in

    asked by Anonymous on March 24, 2017
  43. science

    1) a pea plant with yellow seeds is crossed with a pea plant with green seeds. all of the offsprings have yellow seeds. the allele for yellow sees is a. Dominate because all offspring have yellow seeds. b. Recessive because all of the offsprings have

    asked by dani on October 21, 2014
  44. Science

    1.) when might preserved remains of an entire organism form? A.) when sediment buries the hard part of an organism B.) when an event such as a quick burial or freezing preserves an entire organism ******* C.) when minerals replace parts of an organism D.)

    asked by Zach on February 29, 2016
  45. Science

    1. White skin (W) is dominant over yellow skin (w) in chickens. Which of the following genotypes would result in a white-skinned chicken that could possibly have yellow-skinned offspring? A. WW B. Ww** C. ww 2. Which of the following describes the genotype

    asked by Mimmi on October 7, 2015
  46. Science

    Which of the following Best describes the movement of an object at rest if no outside forces act on it. It will move due to inertia. Gravity will eventually cause it to move. It will stay at rest due to inertia~~~~~~~ It will stay at rest due to gravity.

    asked by Young on May 21, 2018
  47. science

    1) What conclusions can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their properties? :Properties of elements are related to atomic numbers.*** :Properties of elements are related

    asked by Oscar on March 9, 2015
  48. Science

    2. Suppose that you swat at a bee, and it stings you. Jerking your hand away from the bee is a 1.motor neuron 2.reflex**** 3.stimulus 4.Voluntary motion

    asked by Annie:~) on October 21, 2017
  49. science(check answers)

    1.D 2.A 3.A 4.im not sure please help 5.false One light bulb in a string of lights goes out. This causes all of the other lights in the string to also go out. This is an example of a A. resistor. B. parallel circuit. C. closed circuit. D. series circuit.

    asked by matt on March 31, 2014
  50. science(check answers)

    1.A 2.A 3.D 4.C 1.Is the following statement true or false?Solar panels collect energy from the sun that can then power a lamp in a home. A.True B.False 2.Harvesting energy from water,wind,and geothermal vents requries the use of A. aquaculture B.engines

    asked by bonn on March 12, 2014
  51. Science - 6th grade

    A skydiver prepares to jump out of a plane. Explain how gravity and air resistance will affect the motion of the skydiver before and after he or she opens the parachute. My response : Gravity will pull the skydiver down to the ground. As they're in the air

    asked by Carina on May 23, 2016
  52. Science help ms sue.

    Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements

    asked by josh on February 25, 2014
  53. science

    1. The image above shows the Andes Mountains. Which of the following processes formed this feature? (1 point) (pic of Andes Mountains) Glaciers deposited sediment. Plates converged together to form the mountains. Plates pulled apart and released magma.

    asked by TTR+S<3 on April 24, 2014
  54. Science

    Which of the following would best explain why a species of wildflower native to Switzerland is observed growing in the wild in Montana? Wind dispersed seeds of the wildflower.* Water dispersed seeds of the wildflower. A human brought and dispersed the

    asked by Dylan on March 14, 2017
  55. science PLZ HELP

    electric charges that are different A) attract each other B) repel each other C) exist in pairs D) do not interact Magnetic field lines around a bar magnet A) are only perpendicular to the magnet B) spread out from one pole and curve around the other C)

    asked by Anonymous on March 31, 2015
  56. Science! Help!!

    Which of the following traits is acquired? A. The number of petals that grow in a plants flowers. B. The wing shape of a wild bird C. The ability of some gorillas to use sign language D. A cheetah's ability to run faster than any other land animal. Is the

    asked by Gwen on September 24, 2014
  57. science

    enzymes are important because they A contain water B speeds up chemical reactions C contain genetic material D helps the cell maintain its shape

    asked by mrs. kitty on November 8, 2017
  58. Science

    what the difference between the structures of simple and complex

    asked by Alex on September 8, 2013
  59. Science ~CHECK MY WORK PLEASE~

    A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. From Group 17 ********** B. From Group 1 C. From Group 15 D. A Noble Gas

    asked by Jessica on January 29, 2014
  60. Science Urgent😖😖😖

    Why most organisms reproduce A( organisms must reproduce to maintain genetic similarity in the species B( organisms must reproduce to continue to build genetic diverse city into the species C( organisms must reproduce to continue the species D( organisms

    asked by Jirehn on October 12, 2015
  61. SCIENCE

    Which of the following activities has a negative impact on biodiversity? a.)Regulating hunting b.)Establishing wildlife preserves c.)Buying a fuel-efficient car d.)Cutting down trees in rain forests to build more houses.

    asked by Anonymous on January 10, 2014
  62. science

    1. The skeletal system is created to ____________ internal organs. A) protect

    asked by Anonymous on January 7, 2016
  63. Science

    suppose that you swat a bee it stings you. jerking your hand away from the bee is a... A) Motor Neuron B) Reflex** C) Stimulus D) Voluntary Motion

    asked by Sid.V on November 18, 2016
  64. science help!!!

    1. Seahorses change color and swim together in predetermined ways before mating. These behaviors are called (1 point) asexual reproduction. sexual reproduction. courtship rituals. budding. 2. A male peacock displays his colorful tail feathers in order to

    asked by josh on October 18, 2013
  65. Science

    1. Under which of the following conditions would a fossil most likely form? (1point) a. A living thing dies and sediment is very slowly deposited on top of i’s body. b. A living thing dies and sediment quickly covers its body.

    asked by Killlll meeeeeee on November 29, 2017
  66. science

    which of the following statements best describes the biosphere? a) it is a mixture of gases that contain dust particles b)it contains earths metal core c) it contains all of earths water d) it it the part of earth that contains living organisms is it d ?

    asked by victoria on October 30, 2013
  67. science

    in which way does the circulatory system rely on the skeletal system

    asked by Xavion Midnight on November 1, 2018
  68. science

    Which combination of sex chromosomes results in a male human being? 1 XX 2 YY 3 XY 4 either XX or YY is it a?

    asked by Devyn on October 31, 2017
  69. Science

    What conclusion can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their priorities? A. Properties of elements are related to atomic numbers. B. Properties of elements are related to

    asked by blue on October 17, 2014
  70. Science Help!

    A student mixed two clear liquids together in a beaker. A solid and a new liquid formed. The student forgot to write down the mass of one of the reactansts. The rest of the data are shown in the table below. Table Mass (g) Liquid reactant A/ unknown Liquid

    asked by Callie on November 12, 2014
  71. science (correct please)

    (1) Which of the following is an ectothermic vertebrate A) butterfly B) lizard C) eagle D) dog ~~~~~~~~~~~~~~~~~~~~~~~~~ My answer: B ~~~~~~~~~~~~~~~~~~~~~~~~~ (2) which of the following animals is an invertebrate? A) goldfish B) horse C) turtle D)

    asked by Yuno Gasai on April 13, 2016
  72. Science Help!

    You are creating a carbon cycle poster. What could you include in the poster to demonstrate the cycling of carbon? A. A rock falling B. Shells fossilizing C. An eagle breathing D. The sun shining Is the answer D? Thank you

    asked by Callie on November 12, 2014
  73. Science help (just 4 questions)

    1. Which of the following is an example of an environmental pressure? (1 point) the air pressure in the atmosphere a lake that is gradually running out of water a fight between two members of the same species breeding between two members of the same

    asked by Miley23 on December 4, 2013
  74. Science PLEASE HELP ASAP

    Why is photosynthesis an example of a chemical reaction, and why is it classified as endothermic?

    asked by Rodeo~Babe on April 6, 2018
  75. Science

    What are the two gases that animals exchange with their surroundings? A)oxygen and nitrogen B)nitrogen and helium C)hydrogen and carbon dioxide D)carbon dioxide and oxygen Someone please help!!!

    asked by ASDFGHJKL. on January 24, 2018
  76. Science

    Which of the following is true about the magnetic field diagram below. Its shows 3 Arrows on top pointing to B A B 3 Arrows on bottom pointing to B A A is the south pole and B is the north pole B A is the north pole and B is the south pole C A and B are

    asked by BUBBLES on February 19, 2015
  77. Science help.....

    Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA). What was this particular time period called, and why is this time period not really considered a

    asked by Princess Anna on December 30, 2013
  78. Science

    Why must organisms reproduce? A. Organisms must reproduce to maintain genetic similarity in the species. B. Organisms must reproduce to continue to build genetic diversity into the species. C. Organisms must reproduce to continue the species.*** D.

    asked by HI on September 26, 2017
  79. Science

    1. Which of the following about the suns structure is true? A.The sun has a solid surface. B. The sun has an interior and an atmosphere. * C.The sun's is similar to Earth's; it has a core, mantle, and crust. D. The sun's outermost layer is called the

    asked by TeamWork on March 15, 2016
  80. Science helpppp

    1. Students planted three bean seeds. After several days, they observed that the seeds’ roots were growing downward into the soil. Which type of tropism were the roots displaying? (1 point) A) geotropism **** B) thigmotropism C) phototropism D)

    asked by Haley on September 21, 2017
  81. Check my Science questions?

    1. Why is it rare for the soft parts of an organism to become a fossil? The soft parts take a long time to decay. The soft parts can be eaten by other animals. The soft parts cannot be buried in sediment. The soft parts form petrified fossils. 2. Which of

    asked by Princess Anna on December 11, 2013
  82. Science really need help

    Which of the following distinguishes living things from nonliving things? Living things are made up of cells; nonliving things are not*** Living things are made up atoms; nonliving things are not Living things are made up elements; nonliving things are not

    asked by Abigail on September 19, 2017
  83. Science- Radioactive Dating

    Which of the following statements about radioactive dating is true? a. Radioactive decay is the rate at which new atoms form. b. During radioactive decay, atoms break down, releasing particles or energy. c. The rate of decay of a radioactive element cannot

    asked by Anonymous on October 10, 2013
  84. science

    Which of the following can be expected to occur as climate change continues on Earth? is it increased coastal flooding

    asked by help ms sue on January 25, 2018
  85. Science

    Name two types of evidence used to support the theory of evolution. Explain how scientists use each type of evidence to provide support for evolution. Give one example of each. I need 6 sentences please help I still need to finish other classes and I only

    asked by help!! on May 29, 2018
  86. science

    Which of the following is true? ( a ) when plant is kept in sunlight ,photosynthesis and cellular respiration occurs. ( b ) when plant is kept in sunlight ,only photosynthesis occurs (c ) when plant is kept in dark place ,photosynthesis &cellular

    asked by sanjay on January 9, 2015
  87. science!!

    A couple has just learned that their daughter has hemophilia. They already have a son who does not have the disease. What are the genotypes of the couple? Explain your reasoning. ---------------- The gene for hemophilia is sex-linked, a recessive on the

    asked by bells on October 23, 2014
  88. science (check!)

    Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolutionary change might happen fast sometimes? a. homologous structures b. fossils c. reproduction rates*****? d. DNA sequences

    asked by k.k on June 12, 2014
  89. Science Check Answer

    1. Which of the following is the correct definition of minerals? A) A naturally occurring, inorganic solid that has a crystal shape and definite chemical composition. B) A naturally occurring, inorganic solid that forms through crystallization of melted

    asked by Tim on May 2, 2016
  90. science help

    Which process of the carbon cycle is responsible for the release of carbon at the power plant, as shown by the arrow? combustion. photosynthesis. digestion. decomposition. 941080532013105759am498923097.jpg copy and paste this and you will see the picture..

    asked by Oscar on March 30, 2015
  91. Science: Chemical Bonds

    Two nonmetals from group 16 are likely to form a: triple and ionic bond double and ionic bond triple and covalent bond double and covalent bond I don't get this, could someone please explain?

    asked by Lady Phantomhive on March 10, 2016
  92. Science

    1-Which of the following is not a function of the circulatory system? D-fights infection 2-Which of the following explains why the heart is organized so that it pumps blood to two different locations? D-to provide a way for blood to pick up nutrients at

    asked by Rodco on March 20, 2014
  93. Science Help!

    Tony's teacher gave him an unknown substance to identify based on its priorities. After a few tests, Tony listed his observations in a chart. Chart Solid at room temperature Brittle COonducts electricity What kind of substance does Tony have? A. Nonmetal

    asked by Callie on November 13, 2014
  94. Science

    1.)The sporophyte generation produces spores that grow into a A.)Gametophyte B.)Gymnosperm C.)Angiosperm D.)Pupa 2.)Placental mammals develop A.)In leg an egg laid in water B.)In a pouch on the mother's body C.)Inside the mother's body D.)Inside an

    asked by Douglas on October 6, 2015
  95. Science

    The geologic time scale originally ordered Earth's rocks by: A. absolute age B. relative age*** C. composition D. decades and centuries Where did scientists originally get their information to develop the geologic time scale? A. They collected and studied

    asked by Anonymous on November 12, 2015
  96. science

    The modern atomic model includes electrons orbiting the nucleus. Which of the following parts of Dalton's atomic model was disproved by the discovery of the electron? - Atoms are tiny particles. - Atoms cannot be divided into smaller parts . - Atoms have

    asked by julia on September 24, 2015
  97. Science

    Place the following words into the illustration below : gametes, sporophyte, gametomphyte, and zygote. explain how the terms are related

    asked by Meme on December 7, 2016
  98. Science

    What does the notation TT mean to geneticists? A. Two dominant alleles B. Heterozygous C. At least one dominant allele D. One dominant and one recessive allele Is the answer A?

    asked by Anonymous on October 10, 2014
  99. Science

    Which of the following traits is acquired? a) the number of petals that grow in a plant's flowers b) the wing shape of a wild bird c) the ability of some gorilla's to use sign language d) a cheetah's ability to run faster than any other land animal The

    asked by Skyler on January 14, 2014
  100. science

    the neuron that transmit the signal to your foot to kick a soccer ball are called reflexes motor neurons sensory neurons interneurons

    asked by noah on September 24, 2014