Question Number 1: Humans have a lot of homologous structures in common with other animals, and several of these structures are no longer in working order in human bodies. These nonfunctioning structures are called vestigial structures. They still show evidence

81,522 results
  1. science

    How have the historic levels of melanin in human populations changed due to migration? (1 point) Humans that produced more melanin became more common as populations migrated away from the equator. Humans that produced less melanin became more common as

  2. Science

    Question Number 1: Humans have a lot of homologous structures in common with other animals, and several of these structures are no longer in working order in human bodies. These nonfunctioning structures are called vestigial structures. They still show

  3. SCIENCE!!!!

    A) Many animals influence and contribute to ecosystem services. As pollinators, how do bees ultimately contribute to direct ecosystem services?(1 point) Bees pollinate plant species that humans admire in nature. Bees pollinate plant species that contribute

  4. Please check!!!

    Fossils and genes are used to determine(1 point) how many mutations occurred in a species over time. how species will change over time****. differences between organisms. how species interact with each other. 2. A common ancestor is an organism that is

  5. Please help

    Fossils and genes are used to determine(1 point) how many mutations occurred in a species over time. how species will change over time. differences between organisms. how species interact with each other. 2. A common ancestor is an organism that is the(1

  6. Ms sue please check

    A scientist discovers a fossil of an animal and places it in the fossil record. The organism’s bones are similar to the bones of animal T, which appears earlier in the fossil record. Which conclusion is most reasonable?(1 point) The fossils came from the

  7. Can someone please check my answers

    A scientist discovers a fossil of an animal and places it in the fossil record. The organism’s bones are similar to the bones of animal T, which appears earlier in the fossil record. Which conclusion is most reasonable?(1 point) The fossils came from the

  8. biology

    can somebody pleasse help with the genetic variation unit test Which statement best describes the process of crossing over?(1 point) A. Homologous chromatids pair up, and non-sister chromosomes exchange genetic material. B. Pairs of homologous chromatids

  9. Science

    1. Which of the following explains why a bone in a birds wing is homologous to a bone in a lizards 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

  10. Science

    Study the wings of the birds in the two images below. Which of the following words applies to only one of the wing structures represented in this pair of species? A. homologous B. developmental C. vestigial D. inherited I cannot post the pictures, but they

  11. algerbra

    1. Which of the following are used to support the theory of evolution? * 3 points Molecular similarities Homologous structures Fossil evidence i would so appreciate it if you'd answer this and possibly explain it to me. If you also have the rest of the

  12. 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

  13. Biology

    In mitosis, if a cell has 4 chromosomes in prophase, how many chromosomes will this cell have in metaphase? a. 64 b. 32 c. 16 d. 8 e. 4 If a cell has 20 chromosomes in G1, how many chromatids will be present during prophase? a. 30 b. 20 c. 5 d. 40 Which of

  14. science HELP!

    Evidence for evolution includes all of the following except which one? genetic equilibrium homologous structures embryological development fossil records

  15. science

    Analysis of forelimb anatomy of humans, bats, and whales shows that humans and bats have fairly similar skeletal structures, while whales have diverged considerably in the shapes and proportions of their bones. However, analysis of several genes in these

  16. Science

    Which of the following would not be useful in determining the age of a fossil? a. Radiometric dating of the rock containing the fossil. b. Relative dating of the layers surrounding the fossil. c. Identification of fossils of known age found near the fossil

  17. 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

  18. Biology

    What’s the difference between homologous and analogous structures? How do I specify which is which

  19. science

    1.Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolution change might happen fast sometimes? A. Homologous structures B. Fossils*** C. Reproduction rates D. DNA sequences 2.Which of the

  20. 9th grade biology

    Over time, animals have developed adaptations to help them thrive in the environment in which they live. Read the description below and based on the adaptations determine the biome for which the organisms are adapted. Description 1:Broadleaf trees such as

  21. LA

    Just wondering if someone can check this and see if its ok? Forests cover about 31% of the land on Earth, but, sadly, that number is decreasing at a rapid rate. Deforestation, human-driven and natural loss of trees, is one of the main causes of this

  22. Science

    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 Which of the

  23. Science

    Convergent evolution occurs when a. unrelated organisms develop analogous structures. b. different species evolve to become one. c. populations merge into one. d. analogous structures evolve to be homologous. e. none of the above.

  24. world history

    Which of the following would an archaeologist study in order to come up with the conclusion in the depicted table? ~ the diary entries from early humans ~ the artifacts that early humans left behind ~ the oral traditions that early humans passed down ~ the

  25. Chemistry

    C2O2H3 = 5.7 x 10^-10 C2H2IO2 = 1.5 x 10^-11 BrC2H2O2 = 7.9 x 10^-12 The table above provides the chemical structures for weak bases and their ionization constants, Kb. Based on the data, which of the following provides the best reason for the trend in

  26. Evolution

    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

  27. Biology-homologous chromosomes

    please settle a bet with a friend. I say all these statements are true about homologous chromosomes but my friend says they are not. homologous chromosomes have genes that control same traits and control same functions. homologous chromosomes have

  28. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  29. Biology

    Describe the traits that distinguish animals from other organisms Explain the diversity of invertebrates, chordates, and primates using the theory of evolution Describe the structures and body systems of animals that allow them to maintain homeostasis

  30. Biology

    Bacterial cells are prokaryotic. Select two structures of bacterial cells and briefly describe them; what do they look like, what are they composed of? Then, explain how these two structures allow bacterial cells to survive as unicellular organisms. There

  31. SCience(fossils)

    Structures in different animals that have similar functions but are different in evolutionary origin and pattern if development are said to be______________ IS IT HOMOLOGOUS STRUCTURE

  32. biology

    Would you like to help me answers some of my questions in Biology? 1/ Darwin concluded that the most well adapted individuals in a population will leave the most offspring for future generations. This can be considered a measure of an individual's.. a/

  33. Animal Community Paper (Ethics)

    Ok so I need help getting started on my essay. The topic: "Where do animals belong in the moral community? Should animals be seen as only having instrumental worth to humans, or do animals have some intrinsic worth? Should they be given any rights? Is it

  34. English

    1. He has a lot of interesting looks. 2. He has a lot of interested looks. (Which one is correct? Do both have a different meanings?) 3. What animal do you have? - I have a turtle. 4. What kind of animal do you have? - I have a parrot. 5. What animals do

  35. English Literature-Critical Thinking

    Animals should serve as models for us. They are gentle, cooperative, and family-oriented creatures who fight mainly over territory and mates and rarely kill one another. Humans being engage in group warfare and slaughter one another by millions. In fact,

  36. science

    Which experimental approach would be the most effective and easiest to clearly determine the evolutionary relationship between these 2 organisms? The 2 organisms are a starfish and snake. A. Sequence the same gene in both species to compare their

  37. Spanish

    Translate ...using the imperfect passive tense about the things I enjoyed when I was younger. Mark any accent or other marks. I was holding onto my piggybank. I collected a lot of money. I was at my backyard in my house. I played with stuffed animals. My

  38. Evolution

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

  39. Science

    Which experimental approach would be the most effective and easiest to clearly determine the evolutionary relationship between these two organisms? An image of an orange sea star is shown. A photo shows a bright green snake wrapped around a branch. A.

  40. creative writing

    Shelter is something beneath, behind, or within which a person, animal, or thing is protected people from storms. One means of shelter is protection from the cold. Shelters can be for abandoned animals. Shelters can be used for women that are escaping

  41. social impact on technology

    The article "Young at Risk" purposes that the young of humans and animals are more vulnerable to chemical pollutant exposure due to all of the following reasons except that: A. their brains are less sensitive than those of mature humans and animals. B. the

  42. math

    There are 7 men on a bus. Each has 7 backpacks. Each backpack has 7 cats, each nursing 7 kittens, all on the bus. How many legs are on the bus? (This is not a trick question. The driver has stepped off to use the facilities; the cats should have. All

  43. Language Arts, check!!!

    Which statement from "Why Do We Need Zoos?" best captures the author's point of view? 1. "...zoos were open to the general public, too, so everyone could find out about animals." 2. "Some people feel that there is lots of wild space and that animals should

  44. Science

    Study the wings of the birds in the two images below. Which of the following words applies to only one of the wing structures represented in this pair of species? ostrich hummingbird A. homologous B. developmental C. vestigial D. inherited 4 /

  45. Biology

    11. You are searching for a gene that traces its ancestry to an ancient gene in fish. Evolutionarily older fish, like the coelacanth, have only one copy of this gene. More modern fish, like a three-spine stickleback, have three. Modern humans and mammals

  46. 9th grade biology

    please help someone Description 1:Broadleaf trees such as maple, oak and hickory are common in this biome. They are likely to drop their leaves in the winter. Description 2: Migration and hibernation are 2 adaptations commonly used by animals in this

  47. Writing Class

    Can someone give me some ideas on what to narrow my research topic to? My topic is animal testing. My paper has to be 2,000 to 2,500 words including my references. Thanks :) What about eye testing drugs? That is done a lot, and appears to have no

  48. Chemistry

    Molybdenum (Mo) is a heavy metal that can have severe health effects on humans and animals. Tailings from a mining operation in Colorado have polluted surface waters used by grazing animals with Mo. Based on the following information determine the

  49. Biology

    An example of homologous structures would be our front teeth and ___: a. the mandibles of a crab b. the mouthparts of a mosquito c. the beak of a bird d. the tentacles of a sea worm e. the front teeth of a horse I'm having difficult on which answer is

  50. Intro to Ethics

    I have to write a paper over an ethics topic. And I chose: Where do animals belong in the moral community? Should animals be seen as only having instrumental worth to humans, or do animals have some intrinsic worth? Should they be given any rights? Is it

  51. Science

    Do homologous structures have the same function in different organisms?

  52. English

    I am writing a paper and i need 3 reasons why experimenting on animals is okay. I already have 2: it is benefical to humans and animals, and there are strong laws that protect the animals used in experiments but i cant think of a third.

  53. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  54. 9th grade

    what is the difference between homologous and vestigial structures and how do they support darwins theroy of eveolution

  55. Translate into Spanish

    ...using the imperfect passive tense about the things I enjoyed when I was younger. Mark any accent or other marks. I was holding onto my piggybank. I collected a lot of money. I was at my backyard in my house. I played with stuffed animals. My sister and

  56. Science

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

  57. Science

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

  58. Science

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

  59. Science

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

  60. Science

    anatomical differences of humans What possibilities and/or dangers does this difference imply for humans from other animals? Use the arms and hands

  61. phi 200

    Do human beings have any obligations to other animals, in terms of their treatment? If it is wrong to treat animals cruelly, why is it not wrong to eat them? Explain if, and how, you think humans can find a balance between treating animals ethically while

  62. philosophy

    o human beings have any obligations to other animals, in terms of their treatment? If it is wrong to treat animals cruelly, why is it not wrong to eat them? Explain if, and how, you think humans can find a balance between treating animals ethically while

  63. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  64. Biology

    Which of the following cells check for during the G2 check point? a. Growth hormone c. DNA integrity b. Nutritional status d. Cell size In mitosis, if a cell has 4 chromosomes in prophase, how many chromosomes will this cell have in metaphase? a. 64 b. 32

  65. science (check!)

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between the starfish and green snake? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both

  66. Math

    There are seven men on a bus. Each has seven backpacks. Each backpack has seven cats, each nursing seven kittens, all on the bus. How many legs are on the bus? (This is not a trick question. The driver has stepped off to use the facilities; the cats should

  67. LA

    Which statement from "Why Do We Need Zoos?" best captures the author's point of view? "...zoos were open to the general public, too, so everyone could find out about animals." "Some people feel that there is lots of wild space and that animals should only

  68. LA 7

    Which statement from "Why Do We Need Zoos?" best captures the author's point of view? 1. "...zoos were open to the general public, too, so everyone could find out about animals." 2. "Some people feel that there is lots of wild space and that animals should

  69. Biology

    Humans and insects are often said to be the dominant animals on earth. And yet there's only one species of humans and over seven hundred thousand of insects. How would you explain this phenomenon?

  70. Science

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? A. sequence the same gene in both species to compare their similarity. B. dissect specimens of both species to

  71. Creative Writing

    how is everything going now with my assignment. I think that I am on the right track Image Description Shelter -- Shelter is something that helps protect people from the elements. Everyone needs some kind of shelter. It is very important. It protects us

  72. math

    sara inspected the horses and hens in her farm one morning. Afterwards, we could not remember how many animals of each kind she had, but knew the total number of these animals was 27, her own age in 1997. She also knew that the total number of legs was 70,

  73. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  74. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  75. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  76. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  77. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  78. Science

    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

  79. 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

  80. biology honors

    i am doing a research paper on animal rights what are some specific issues related to the topic and develop a specific research question from your selected contemporary issue. ( i put "animals used as experiments") my thesis is animals should not be used

  81. HARD MATH PROBLEM (NEED HELP)

    One day a person went to a hourse racing area,instead of counting the humans and the horses he instead counted the heads and leg there where 74 heads and 196 legs yet he still knew the number of the humans and the hourses.How did he figure that out and how

  82. Article Summary Evaluation (Help!)

    The article is "Free the Elephants and Orcas in Captivity [Editorial]" by the Editors on a website called Scientific America. Please let me know what I need to edit. Summary: In the article "Free the Elephants and Orcas in Captivity [Editorial]" by the

  83. Evolution

    Study the wings of the birds in the two images below. Which of the following words applies to only one of the wing structures represented in this pair of species? A. homologous B. developmental C. vestigial D. inherited I cannot post the pictures, but they

  84. Chemistry

    Some (or all) of the structures below are representations are of the same molecule. How many unique structures are shown (i.e., how many structures with different molecular formulae)? Image:

  85. Bio

    List the Meiosis steps in order. Sister chromatids have moved to opposite end of the cell. Sister chromosomes separate. Homologous chromosomes are at opposite ends of the cell, cell undergoes cytokinesis to form 2 haploid cells. Chromosomes duplicate in

  86. Biology

    Which of the following statements are accurate? A. All animals are prokaryotes B. All animals are autotrophic eukaryotes C. All animals have tissues D. All animals have organs E. All animals are multicellular.

  87. Chemistry, HELP!

    Molybdenum (Mo) is a heavy metal that can have severe health effects on humans and animals. Tailings from a mining operation in Colorado have polluted surface waters used by grazing animals with Mo. Based on the following information determine the

  88. Environmental Science

    For my environmental science reseaerch paper on coral reefs I wanted to copy this intro paragraph from my workbook: Coral reefs are the second richest ecosystem or interdependent environment on Earth. They have been called the rain forests of the oceans

  89. Environmental Science

    For my environmental science reseaerch paper on coral reefs I wanted to copy this intro paragraph from my workbook: Coral reefs are the second richest ecosystem or interdependent environment on Earth. They have been called the rain forests of the oceans

  90. English

    can some proofread this research paper Mario Garcia Mrs. Minick English 2-09-12 Animal Experimentation Many people say no animal should be held for cruelty, such as being experimented on for biomedical research. There are people out there that need a cure

  91. Math 117

    2. Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $2,500 for setup costs and $3.00 to administer each test. a. Write an expression that gives the total cost to test x

  92. Algebra

    2. Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $2,500 for setup costs and $3.00 to administer each test. a. Write an expression that gives the total cost to test x

  93. Algebra

    Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $2,500 for setup costs and $3.00 to administer each test. a. Write an expression that gives the total cost to test x

  94. Biology

    how is fungi beneficial to humans, other animals, and the ecosystem?

  95. English

    In Rikki-tikki-tavi, how do the characters represent humans??? I have read the short story and so far have this: The animals in Rikki-tikki-tavi represent humans in a lot of ways. For example, when Nagaina is forced to choose between her last child and a

  96. history

    one advantage humans had cover animals they hunted was that humans )were bigger )had weapons**** )were stronger )were faster am i right

  97. Science

    Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? a. sequence the same gene in both species to compare their similarity. b. dissect specimens of both species to

  98. science

    All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures

  99. Bio

    A lot of livestock is being given growth stimulating hormones. How does this affect humans that are eating this livestock? I don't remember what the word is but I remember that with presticides that they remain in the body and they biosomething so theres

  100. math 117 appendix d

    Appendix D The Environment Environmental and wildlife preservation ensures future generations will have available resources and can enjoy the beauty of Earth. On the other hand, some of the damage humans have already done to the environment is expensive

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