Birds are most closely related to

A. crocodiles.
B. snakes.
C. mammals.
D. non-avian dinosaurs.
E. amphibians.


D. non-avian dinosaurs.

Biology & Microbiology

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Which of the following is NOT a way that many terrestrial ectotherms regulate their temperature?

a. moving into or out of the shade b. panting c. changing the angle of the body relative to the sun d. changing blood flow to the skin e. thermoregulation

Biology & Microbiology

Changes in heritable traits result from adaptation to environmental influences

Indicate whether the statement is true or false

Biology & Microbiology

In an ecosystem’s bottom-up processes, predators affect the abundances of other populations in the ecological

community. ____________________ Indicate whether the statement is true or false.

Biology & Microbiology

Worms with a well-developed circulatory system (including five pairs of hearts) are

A) echinoderms. B) eels. C) nematodes. D) annelids. E) platyhelminths.

Biology & Microbiology