Biology, 24.09.2020 22:01 bubblegum2850
Which statement explains something that the fossil record indicates?
A. Earth is 4.5 billion years old.
B. Mammals have always existed on Earth.
C. Mass extinctions have occurred several times on Earth.
D. The amount of water on Earth has decreased over time.
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2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.
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This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.
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Which statement explains something that the fossil record indicates?
A. Earth is 4.5 billion years...
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