Birds and crocodiles share which of the following

characteristics?
a. ectothermy (body temperature regulated by
environment)
b. body hair
c. four-chambered heart
d. lung design
e. light-weight bones


Answer: c

Biology & Microbiology

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A difference in charge between guard cell cytoplasm and extracellular fluid is called ____

a. osmosis b. tension c. turgor d. pressure gradient e. voltage

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Genetic drift that occurs in small, new colonies is called ________

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