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


C

Biology & Microbiology

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Mantled howler monkeys have been found to obtain most of their food from relatively rare trees, even though finding these trees takes much longer than finding common trees. Nutritional analyses of both rare and common trees found that the rare trees tended to be higher in protein and water, while the common trees tended to be higher in crude fiber and plant secondary compounds. What process would maintain this behavior in mantled howler monkey populations?

A. habituation B. natural selection C. imprinting D. visual communication E. sexual selection

Biology & Microbiology

Which body region is protected by fatty acids, acidic pH, lactic acid, and a tough cell barrier with its own normal biota?

A. Skin B. Respiratory tract C. Urinary tract D. Digestive tract E. Eyes

Biology & Microbiology

During aerobic respiration, oxygen is:

a. formed. b. reduced. c. oxidized. d. catabolized. e. decarboxylated.

Biology & Microbiology

Describe the value of using twins in the study of questions relating to the relative impact of heredity versus environment

What will be an ideal response?

Biology & Microbiology