When blood calcium levels fall, the ________ secrete a hormone that causes greater calcium release from the bones
Fill in the blank(s) with correct word
parathyroid glands
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Cheetahs have been through a genetic bottleneck; evidence for this is that
A. the body is long, thin, and graceful. B. these cats are members of an endangered species. C. there is very little genetic variability. D. little natural selection occurs in this species. E. they originally came from small areas of Africa.
What are the 3 parts of the neurons?
Which disorder is the result of a bacterial infection that destroys patches of lung tissue and can also spread to other
body parts? a. pneumonia b. influenza c. tuberculosis d. lung cancer e. emphysema
What effect is warming predicted to have on migration behavior?
A) Birds will depart for migration earlier and return later. B) Birds will depart for migration later and return later. C) Birds will depart for migration earlier and return earlier. D) Birds will depart for migration later and return earlier.