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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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Nimaa Nimaa
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9 years ago
Which of the following is true?
A) Species on Earth today are but a fraction of all species that ever lived.
B) The number of species existing at one time has decreased throughout history.
C) Extinctions of past species have happened gradually and on a small scale.
D) Most organisms present early in Earth's prehistory were more complex than modern organisms.
E) Bacteria represent a newer form of life, not present during the early prehistory of Earth.
Textbook 
Essential Environment

Essential Environment


Edition: 4th
Author:
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JesuisMelJesuisMel
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9 years ago
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Nimaa Author
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9 years ago
Marking this topic solved, solid help.
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