Over hundreds of millions of years, high pressure and temperature transformed ____ into deposits of oil and natural gas.
A. coal
B. land animal remains
C. land plant remains
D. plankton remains
E. sedimentary rock
Answer: D
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Which evolutionary innovation was most significant in helping tetrapods move to dry terrestrial environments?
A) the lung B) the amniotic egg C) bone D) limb specialization E) endothermy
Write the letter of the ecological level of organization that is the least complex and inclusive next to 1
Sequence the remaining levels of organization by increasing complexity.
A. ecosystem ecology B. organismal ecology C. community ecology D. population ecology 1. 2. 3. 4.
A reflex ____
a. only involves the use of sensory neurons b. is an automatic response to a stimulus that requires considerable thought c. is an automatic response to a stimulus that doesn't require thought d. is an involuntary response that requires only one neuron e. does not require the brain
A predisposing factor for infection by Clostridium perfringens is
A) gangrene. B) burns. C) debridement. D) hyperbaric treatment. E) an infected finger.