Biology, 11.07.2019 08:00 jollyjinkings
Which of the following statements about a controlled experiment is true? a. all the variables must be kept the same b. only one variable is tested at a time c. controlled experiments cannot be performed on living things d. everything can be studied by setting up a controlled experiment
Answers: 1
Biology, 22.06.2019 02:00
Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat
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The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.
Answers: 1
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When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?
Answers: 1
Biology, 22.06.2019 19:30
Do you think humans have a moral obligation to preserve the habitat of the chimpanzee
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Which of the following statements about a controlled experiment is true? a. all the variables must...
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