Which statements explain what the fossil record indicates? Check all that apply
A. Earth is 4...
Which statements explain what the fossil record indicates? Check all that apply
A. Earth is 4.5 billion years old
B. Many organisms become extinct
C. Mammals have always existed on earth
D. Mass extinctions have occurred several times on earth
E. The amount of water on earth has decreased over time
Answers: 2
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How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different
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Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above
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The smallest parts of these that retain their original properties are called
Answers: 1
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