Animals that produce most of their own heat as by-products of metabolism are (select all correct choices):

A. endotherms.
B. active over a broad range of external
temperatures.
C. likely to respond to cool temperatures with
peripheral vasodilation.
D. unable to carry out fermentation in
anaerobic conditions.
E. most active in the heat of the daytime.


A,B

Biology & Microbiology

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