The origin of the human species (Homo sapiens)
A. begins with human-like organisms about 100 million years ago.
B. involved changes from a herbivore to carnivore way of life.
C. involved the direct development of humans from Australopithecus.
D. All of these answers are correct.
B. involved changes from a herbivore to carnivore way of life.
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The dominant autotrophs of the open water are
A) phytoplankton. B) kelp. C) seagrasses. D) stromatolites.
Most lipids need to be attached to transport proteins to move through blood
Indicate whether the statement is true or false
Which of the following best illustrates an instinctive behavior in cats?
a. scratching at the door to get in or out b. hunting and killing c. knowing when it is time to get fed d. being afraid of dogs e. All of the above are instinctive behaviors in cats.
Segments of eukaryotic DNA that can move or be copied from one site to another in the genome are called
A) exons. B) plasmids. C) transposable elements. D) vectors.