1. english

    1. Which of the following is the correct definition of minerals. a. a naturally occurring, inorganic soild that has a crystal shape and a definite chemical composition. b. a naturally occurring , inorganic soild tha forms throught crystallization of melted

    asked by please help on May 17, 2016
  2. 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
  3. Science

    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 Anonymous on May 3, 2016
  4. Physics

    Correct if i am wrong? Which of the following is a quantitative property of minerals? a. Cleavage b. Hardness **** c. Luster d. Streak Which of the following is NOT a characteristic of minerals? a. Occur in gaseous and liquid state b. Formed by inorganic

    asked by Alina S on January 21, 2014
  5. science

    Correct me if i'm wrong? Giving medals. Which of the following is a quantitative property of minerals? a. Cleavage b. Hardness **** c. Luster d. Streak Which of the following is NOT a characteristic of minerals? a. Occur in gaseous and liquid state b.

    asked by Anonymous on January 21, 2014
  6. science

    which of the following is a quantitative property of minerals ? a) cleavage b) hardness c) luster d) streak which of the following is not a characteristics of minerals ? a) occur in gaseous and liquid state b) formed by inorganic processes c) naturally

    asked by Victoria on January 6, 2014
  7. Science

    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
  8. PlS HELP Science

    Which of the following is not a characteristic of minerals? A. occur in gaseous and liquid stats B. formed by inorganic processes C. naturally occurring D. definite chemical composition My answer is B B. formed by inorganic processes

    asked by Conexus Student on February 4, 2019
  9. science

    The term used to describe how light is reflected from a mineral’s surface is A. glow. B. streak. C. density. D. luster. Which of the following is a quantitative property of minerals? A. cleavage B. hardness C. luster D. streak Which of the following is

    asked by SS_CPA on January 23, 2019
  10. scince

    Fill in the blank Minerals is a naturally occuring, inorganic, crystalline solid, having a defintie chemical composition. Minerals are composed of one or more chemical eleents. Example: NaCl => __________=> salt plz help me.

    asked by Anonymous on May 22, 2009
  11. Science

    Describe what makes a mineral unique from other substances. This is (my answer) Its not a lot tho :( Answer:A mineral is a natural occurring crystalline. Minerals are naturally occurring. PLS HELP It's worth 4 points.

    asked by PLS HELP on September 29, 2016
  12. Chemistry

    There are three naturally occurring isotopes of the hypothetical element hilarium 41Hi, 42Hi, and 44Hi. The percentages of these isotopes are the following: Hilarium Natural Isotopes Abundance 41Hi 18.7% 42Hi 43.6% 44Hi 37.7% You can assume that the atomic

    asked by anonymous on August 22, 2016
  13. Mathematics

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

    asked by Queen/Halle on April 12, 2016
  14. Chemistry

    The isotopic abundance of naturally occurring hydrogen is as follows: 1H 99.985 atom % 2H 0.015 atom% When H2 gas is formed from naturally occurring hydrogen, what percentages of the molecules have molecular weights of approximately 2, 3 and 4?

    asked by Jane on October 1, 2013
  15. science

    What is the relationship between a mineral and a rock? A.They are the exact same thing. B.A mineral is a building block of rocks. C.Minerals are only silicates while rocks are nonsilicates. D.A rock is always man-made while a mineral is naturally

    asked by ash on October 3, 2012
  16. chemistry

    Naturally occurring silicon exists as 3 isotopes: 28Si, 29Si, and 30Si, whose atomic masses are 27.9769, 28.9865, and 29.9838, respectively. The most abundant isotope is 28Si, which accounts for 92.23% of naturally occurring silicon. Given that the average

    asked by Rinad on September 30, 2014
  17. Physical science

    Why can't naturally occuring uranium be used in a nuclear power plant? A. Naturally occurring uranium decays too rapidly into thorium. B. The temperature of the uranium is too low. C. A sustainable chain reaction requires higher concentrations of U235 than

    asked by Anonymous on October 27, 2011
  18. chemistry

    there are 3 naturally occurring stable isotopes of oxygen:O-16,O-17, O-18. there are 2 naturally occurring stable isotopes of hydrogen: H-1, H-2.how many different water molecules can be made using the various combination's of all the isotopes of hydrogen

    asked by Navroz on October 23, 2010
  19. Chemistry (URGENT)

    I have a test soon. If you can help me with these questions, that would be great. 1. Define and describe the following. a)Alkaline - metal - base b)Corrosive - burn/eat away - acid c)Caustic - harsh - both? (acid + base) d)Low pH - 0-6.99 - acid Please

    asked by John on March 3, 2010
  20. science

    what is a mineral? noun: solid homogeneous inorganic substances occurring in nature having a definite chemical composition

    asked by jack on November 7, 2006
  21. SCIENCE

    WHAT HAPPENS IF EARTH'S MINERALS ARE USED UP? Will more grow or will there be no more Some minerals are being formed all the tme; others are not and will die out, so to speak, or be redustributed and any one site will be too small to pay to mine.

    asked by ALEXIS on December 11, 2006
  22. science

    The heaviest naturally occurring element is

    asked by kailey on November 17, 2016
  23. Understanding Paragraphs

    Read each of the following paragraph and underline the topic sentence. Although color is generally the most conspicuous characteristic of a mineral, it is considered a diagnostic property of only a few minerals. Slight impurities in the common mineral

    asked by ME on October 4, 2011
  24. Understanding Paragraphs

    Read each of the following paragraph and underline the topic sentence. Although color is generally the most conspicuous characteristic of a mineral, it is considered a diagnostic property of only a few minerals. Slight impurities in the common mineral

    asked by ME on October 4, 2011
  25. chemistry

    Define the term 'polymer' and then name two examples of naturally occurring polymers.

    asked by Coco on May 19, 2009
  26. chemistry

    Naturally occurring reactions of oxygen (O2) are always desirable. True or False

    asked by Taylor on December 6, 2014
  27. science

    The heaviest naturally occurring element is a) Uranium b) Iron c) Silica d) Aluminum

    asked by raul on June 19, 2013
  28. physical science

    Which of the following statements is NOT true? A. You are exposed to nuclear radiation every day. B. Most of the nuclear radiation you are exposed to occurs naturally in the environment. C. Naturally occurring nuclear radiation is called background

    asked by bee on September 15, 2015
  29. Science

    If you were a pharmaceutical researcher, why would you want to learn the three dimensional shapes of naturally occurring signaling molecules?

    asked by Anon on July 3, 2013
  30. Chemistry

    Why is graphite such a good conductor of electricity? Why is diamond the hardest naturally occurring substance?

    asked by Olivia on December 5, 2010
  31. Chemistry

    On Earth, naturally occurring calcium metal contains 6 isotopes: Ca-40, Ca-42, Ca-43, Ca-44, Ca-46, Ca-48. Select all of the following that are true for a sample of naturally occurring calcium. A) The average mass of the calcium atoms is 40.078 amu. B)One

    asked by Kayte on November 12, 2015
  32. Chemistry

    I am doing a report on ethylene glycol, AKA antifreeze, and I need to figure out if it is naturally occurring or if it is man-made. I can't seem to find this answer anywhere! Please help!

    asked by Julie on December 4, 2010
  33. chemistry

    The atomic mass of chlorine is listed as 35.454 amu on the periodic table. It has two naturally occurring isotopes, CI-35 and CI-37. What are the approximate percentage of each?

    asked by Sara on September 20, 2012
  34. science

    4.which of these statements best describes the relationship difference between minerals and rocks. 1.most minerals are made of rocks. 2.most rocks are made of minerals. 3.rocks are solid but minerals are not. 4.rocks are found on earths surface but

    asked by Destiny on March 31, 2016
  35. Chemistry

    hello sir, My name is Tengku Ismadi from University Technology of Malaysia, and i'm studying in Mechanical Eng. I have several questions regarding essential oils. This is some literature study for one of my subject. Due to your expertise, I hope you can

    asked by ismadi on October 23, 2007
  36. biology

    In artificial selection, what factor substitutes for naturally occurring selection pressures?

    asked by debra on May 8, 2008
  37. Chemistry

    Copper is composed of two naturally occurring isotopes: Cu−63 (69.170%) and Cu−65. The ratio of the masses of the two isotopes is 1.0318.

    asked by Vanessa on September 3, 2014
  38. chemistry

    the element boron has two naturally occurring isotopes with masses of 10.01amu and 11.01amu. What is the percent abundance of the first isotope.

    asked by Anonymous on September 19, 2007
  39. Chemistry

    Bromine has two naturally occurring isotopes, the first of which is 79Br with a mass of 78.904 amu and an abundance of 50.54%. Calculate the mass of the other isotope.

    asked by Louise on November 30, 2014
  40. Chemistry

    Compare and contrast the processes of nuclear fission and fusion, showing similarities and differences. Describe which, if any, of these processes is naturally occurring. If so, where?

    asked by Joanna on May 24, 2013
  41. geography

    Give one mineral for each physical property. Physical properties: (1)It must occur naturally. (2)It must be inorganic. (3)It must be a solid. (4)It must possess an orderly internal structure: that is, its atoms must be arranged in a definite pattern. (5)It

    asked by Kan on October 23, 2007
  42. science

    before 1937, all naturally occurring elements had been discovered except element 43. chemists predicted the chemical properties of this element, now called technetium. how were those predictions possible?

    asked by serina chenette on November 19, 2015
  43. Whole grains and refined graines

    Whole grains or food food made from them,contain all the essential parts and naturally-occurring nutrients of the entire grain seed. True or false

    asked by Olivia on September 22, 2012
  44. CHEMISTRY HELP !!!!

    Which of the following statements is/are CORRECT? 1. Naturally occurring isotopes account for only a small fraction of known radioactive isotopes. 2. A few radioactive isotopes with long half-lives, such as U-235 and U-238, are found in nature. 3. Trace

    asked by Kimberly :( on May 6, 2014
  45. science

    The atomic mass of lithium is 6.94, the naturally occurring isotopes are 6Li = 6.015121 amu, and 7Li = 7.016003 amu. Determine the percent abundance of each isotope.

    asked by Annika on June 11, 2013
  46. science

    the result of all 3 physicl tests shown are most useful for determining the 1.. rate of weathering of the minerals 2.. identity of the minrels 3.. envoronment for the minerals formed 4.. geologic period when the minerals formed

    asked by Anonymous on November 8, 2008
  47. crt

    To introduce an unusual or unfamiliar word, to coin new words, or to introduce a new meaning to a familiar word." A) Stipulative definition B) Precising definition C) Explanatory definition D) Persuasive definition E) Definition by example F) Analytical

    asked by shon on January 18, 2011
  48. Chemistry

    A 53.8-mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0 amu). If 29.6% of the chlorine atoms in the sample are chlorine-36 and the remainder are naturally occurring nonradioactive chlorine atoms, how many

    asked by Harry on June 21, 2016
  49. Science help!

    Compounds with high melting points have _____. covalent bonds metallic bonds ionic bonds no chemical bonds 4. Which of the following is NOT a characteristic of minerals? crystalline structure formed by inorganic processes definite chemical composition

    asked by Anonymous on October 5, 2014
  50. chemistry

    A hypothetical pure element consists entirely of two isotopes. The natural percent abun- dance of theisotopewithmass 25.4 uis 82.6%. The other isotope has mass 29.5 u. Calculate the atomic weight of the naturally occurring element.

    asked by chanel on September 15, 2014
  51. Chemistry

    You read a reversible reaction from left to right in the forward direction. This direction shows which of these occurring? a) the reactants forming a product b) the product decomposing to form reactants c) both a and b occurring d) b occurring, followed by

    asked by Jennifer on December 8, 2014
  52. biology

    Minerals ener the plant through the soil solution. SOme are passively carried along with the ater that is taken up. Plants can also selectively absorb minerals and accumulate them. This requires active transport across a cell membrane. If it were not for

    asked by natash on April 10, 2008
  53. Physics

    Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the two naturally occurring electrons is removed. The radius of the orbit is 2.65 10-11 m. Determine the magnitude of

    asked by Sarah on September 8, 2013
  54. Physics

    Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the two naturally occurring electrons is removed. The radius of the orbit is 2.65 10-11 m. Determine the magnitude of

    asked by Sarah on September 6, 2013
  55. Physics

    Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the two naturally occurring electrons is removed. The radius of the orbit is 2.65 10-11 m. Determine the magnitude of

    asked by Sarah on September 8, 2013
  56. physics

    Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the two naturally occurring electrons is removed. The radius of the orbit is 2.65 10-11 m. Determine the magnitude of

    asked by amber on September 2, 2009
  57. Chemistry

    How is this question done? The percent abundance of deuterium (2H isotope) in naturally occurring hydrogen is 1.4x10¯2 mole %. What mass, in g, of deuterium would be present in one mole of C6H12O6?

    asked by Kearstyn on May 16, 2009
  58. chemistry

    There are two naturally occurring isotopes of copper. 63Cu has a mass of 62.9296 amu. 65Cu has a mass of 64.9278 amu. Determine the abundance of each isotope.

    asked by poom on September 14, 2018
  59. Chemistry

    Naturally occurring copper is a mixture of two isotopes. One of these has 34 neutrons the other has 36. If the relative atomic mass of copper is 63.55 amu calculate the natural abundances (percentages ) of the two isotopes.

    asked by Rose on October 5, 2014
  60. chemistry

    Calculate the atomic mass of naturally occurring molybdenum (Mo) which contains the following isotopes. Isotope Abundance (%) Atomic mass (a.u.) 92Mo 15.8 91.91 94Mo 9.0 93.90 95Mo 15.7 94.91 96Mo 16.5 95.91 97Mo 9.5 96.91 98Mo 23.5 97.91 100Mo 9.7 99.91

    asked by Sara on June 22, 2014
  61. Science

    I'm having trouble with this question, can someone help? Which of the following is the BEST description of forest soil? thin humus layer, minerals deep beneath the surface thin humus layer, minerals close to the surface very little humus, rich in minerals

    asked by Anna-Belle on January 25, 2018
  62. Science (atoms) 8th grade

    Chlorine has an average atomic mass of 35.45 amu. The 2 naturally occurring isotopes of chlorine are chlorine-35 and chlorine-37. Why does this indicate that most chlorine atoms contain 18 neutrons?

    asked by Twilight lover on January 15, 2009
  63. Science

    Hey can anyone help? I am having trouble with one question, and I need someone to check my answer for a different one. Which of the following is a living renewable resource? trees*** water sunlight wind This is one I am having trouble with: Which of the

    asked by Anna-Belle on January 25, 2018
  64. Chemistry

    Based on the steps occurring in an acid-base reaction, which definition of acids and bases is most practical? Give three reasons for your choice.

    asked by Meagan on March 18, 2011
  65. US History

    I was looking up the definition for pilgrim and all I found were things saying: a pilgramage for religious reasons. I want the correct definition for a 1600 pilgrim. Would "those who settled in Plymouth, New England" be correct?

    asked by Mimi on September 3, 2009
  66. chemistry

    Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic weight of copper to determine the mass of the other copper isotope.

    asked by NEED HELP on September 27, 2010
  67. chemistry

    The atomic mass of Eu is 151.96. There are only two naturally occurring isotopes of europium, 151Eu with a mass of 151.0 and 153Eu with a mass of 153.0. The natural abundance of the 131Eu isotope must be approximately

    asked by Kumar on March 29, 2010
  68. Chemistry

    Silver has an average atomic mass of 107.9 u and is known to have only two naturally occurring isotopes. If 51.84% of Ag exists as Ag-107 (106.9051 u), what is the identity and the atomic mass of the other isotope?

    asked by Anonymous on October 19, 2012
  69. Help Math

    Events A and B are mutually exclusive. The probability of event A occurring is0.15; the probability of event B occurring is 0.45; what is the probability that A and B will occur? A.0.30 B.0.60 C.1 D.0.40 I think C am I correct?

    asked by Chrissy on December 30, 2012
  70. chemistry

    there are two naturally occurring isotopes of the element zinc. the relative abundance and mass of each are as follow 64 30zn=48.89% 63.929 amu 66 30zn=27.81% 65.926 is it 0.4889(63.929)+027.81(65.926) divide by 2?

    asked by 000 on October 29, 2010
  71. Chemistry

    Naturally occurring copper contains a mixture of 69.09% copper-63 (63.9298 amu) and 30.91% copper-65 (64.9278 amu). What is the average atomic mass of copper?

    asked by ashley on January 27, 2012
  72. Modern Chemistry

    Bromine has two naturally occurring isotopes. Bromine-79 has a mass of 78.918 amu and is 50.69% abundant. Using the atomic mass reported on the periodic table, determine the mass of bromine-81, the other isotope of bromine.

    asked by Anonymous on November 20, 2013
  73. physical science

    Before 1937, all naturally occurring elements had been discovered, but no one had found any trace of element 43. Chemists were still able to predict the chemical properties of this element (now called technetium), which is widely used today for diagnosing

    asked by Jameisha on November 30, 2008
  74. AP Chemistry

    Sodium can be extracted by heating naturally occurring salt until it is molten. An electrochemical process is then used to extract the sodium. Cl2 is produced at the anode, and Na is collected at the cathode. Write the half-reactions that occur at the

    asked by Jessica AP Chemistry on July 6, 2016
  75. biology

    What are minerals? Give names of a few minerals and details of the following: 1 Iron and calcium 2 Iodine and phosphorus

    asked by Mariam on November 2, 2009
  76. English

    1. What type of definition is used to introduce an unusual or unfamiliar word, to coin new words, or to introduce a new meaning to a familiar word? Hint A. Stipulative definition B. Precising definition C. Explanatory definition D. Persuasive definition

    asked by tia on July 6, 2012
  77. Chemistry

    Naturally occurring magnesium consists of Magnesium-24 (23.9850 amu; 78.99%), Magnesium-25 (24.9858 amu), and Magnesium-26 (25.9826 amu). Using the average atomic mass from the periodic table, calculate the closest percent abundance of Magnesuim-26. a)

    asked by Mackenzie on December 15, 2014
  78. latin bases

    which statement is not a requirement for anadequate definition? A)***a definition should not be expressed in the negative. b) a definition should be complex C)a definition should use a noun to define a noun a verb etc D)a definition should not giv an

    asked by henry on March 31, 2010
  79. science

    I have several questions regarding essential oils. Please answer as many questions as you can that is within your expertise. For each of the following naturally occurring oils: Citronella ,eucalyptus,cinnamon leaf,nutmeg,clove,rose,jasmine,lavender a.how

    asked by khairul on May 6, 2007
  80. Biochemstry

    1. A buffer was prepared by dissolving 11.7 g of KH2PO4 in 400 mL of water, and with the addition of concentrated solution of KOH the pH was adjusted to 7.10. The volume was then adjusted to 500 mL. What are the [PO43-], [HPO42-], [H2PO41-], and [H3PO4]?

    asked by James on February 24, 2014
  81. Chemistry

    Which of the following is NOT a statement of the second law of thermodynamics? a. The entropy of the universe is always increasing. b. Every naturally occurring process produces some entropy. c. Energy is conserved in quantity but not in quality. d. Every

    asked by Adryan on December 6, 2011
  82. Chemistry

    A hypothetical pure element consists entirely of two isotopes. The natural percent abundance of the isotope with mass 25.5 u is 78.8 percent. The other isotope has mass 29.5 u. Calculate the atomic weight of the naturally occurring element.

    asked by Amanda on October 16, 2016
  83. Social Studies

    What is the meaning of indigenous? a. completely unlike your surroundings b. taking on the cultural traits of a larger group c. originating in and naturally living, growing, or occurring in a region or country*** d. blending of the cultural traits of a

    asked by Kaai97 on December 2, 2015
  84. science

    Amino acids that you obtain from eating foods are classified as A. essential. C. extracellular. B. facilitated. D. inorganic. A - is this correct

    asked by Allison on March 25, 2009
  85. Chemistry H.

    Indium has two naturally occurring isotopes and an atomic mass of 114.818 amu. In- 113 has a mass of 112.904 amu and an abundance of 4.3%. What is the identity and percent abundance of indium's other isotope. I am very confused on how do I set up this

    asked by Jennifer on September 23, 2012
  86. Socials

    What does the term "storehouse of minerals" Does it mean just a place where minerals can be found.

    asked by Sara on January 5, 2010
  87. science

    i need to know where i can find the list of metallic minerals and the nonmetallic minerals

    asked by Amber on September 15, 2009
  88. Legal

    Under the legal definition of Fructus Industrials is it true that "Minerals in the Soil" would not fall under this? It would in fact, fall under Fructus Naturales?

    asked by Wendy on March 30, 2008
  89. chemistry

    Compound 1 (Figure 1 below) is a naturally occurring compound produced within the human body. It is carried in the bloodstream and stored in the muscles to supply energy for muscle contraction during activity. A) B) (H2N) CH3 ( O \ l // C - N - CH2 - C //

    asked by Anonymous student on January 25, 2011
  90. honors chem

    naturally occurring boron is 80.20% boron 11 (atomic mass= 11.01amu) and 19.80% of some other isoptopic form of boron. what must the atmoci mass be be in order to account for the 10.81 amu averafe atomic mass of boron? round to two decimal places i got

    asked by Tom on October 17, 2016
  91. chemistry

    why do organic reactions occur more slowly than inorganic reactions (those that contain ionic bonds)? In inorganic reactions the ions merely need to get close enough to attract between + and - charges. Organic compounds are not ionic (some are polar);

    asked by joe on January 10, 2007
  92. home economics

    minerals required in very small amounts are known as _ _ _ _ _ minerals!

    asked by lisa on September 5, 2009
  93. organic

    which is false about naturally occurring a-amino acids? they belong to the D family of chiral compounds related to D-glyceraldehyde all are chiral except for glycine each has a characteristic isoelectric point the ph at which there is no net migration of

    asked by Jake on November 20, 2008
  94. Chemistry

    A 50.6 mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0 amu). If 29.6% of the chlorine atoms in the sample are chlorine-36 and the remainder is naturally occurring nonradioactive chlorine atoms, how many

    asked by Steven on February 13, 2012
  95. Chemistry

    Magnesium has three naturally occurring isotopes: 24 Mg (23.985 amu) with 78.99% abundance, 25 Mg (24.986 amu) with 10.00% abundance, and a third with 11.01% abundance. Look up the atomic mass of magnesium, and then calculate the mass of the third isotope.

    asked by Anonymous on November 16, 2010
  96. Chemistry

    12) Naturally occurring argon is composed of 0.3365% of 36Ar (atomic mass, 35.9675 u), 0.0632% of 38Ar (atomic mass, 37.9627 u), and 99.6003% of 40Ar (atomic mass, 39.9624 u). Use these data to calculate the average atomic mass of argon.

    asked by Luke on July 1, 2014
  97. Chemistry

    Bromine has two naturally occurring isotopes. Bromine-79 has a mass of 78.918 amu (atomic mass unit) and is 50.69% abundant. Using the atomic mass reported on the periodic table, determine the mass of bromine-81, the other isotope of bromine.

    asked by Zalenia on November 21, 2013
  98. science help plzzzzzzzzzzzzzzz?

    all but one of the following statement about the melting and crystallization of magmas is correct.identify the one statement that is incorrect. 1)the presence of water decreases the melting temperature of magma. 2)the upper part of magma in a magma chamber

    asked by centya on March 17, 2013
  99. Science need help

    all but one of the following statement about the melting and crystallization of magmas is correct.identify the one statement that is incorrect. 1)the presence of water decreases the melting temperature of magma. 2)the upper part of magma in a magma chamber

    asked by centya on March 9, 2013
  100. Science

    Henri Becquerel expected to see only weak images on the photographic plate containing the uranium salt because he thought (1 point) A.fluorescent minerals needed direct sunlight to produce radio waves. B.fluorescent minerals needed direct sunlight to

    asked by jeje on January 21, 2015