A possible reason for deep-sea gigantism is:
a. the long life of these animals, compared with shallow-water relatives.
b. the healthy diet of these animals.
c. the high pressure of these waters.
d. the lack of predators, which means longer life and larger size.
e. the high metabolism of deep sea animals.
A
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Vascular cambium (wood) evolved independently in several different groups of vascular plants
A. true B. false
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