Antlers on a male deer and the lack of antlers on a female deer are examples of

A. polygamy.
B. monogamy.
C. sexual behavior.
D. sexual dimorphism.
E. optimal foraging.


D. sexual dimorphism.

Biology & Microbiology

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Which portion of Figure 43-3 would be connected to the oval window?


a. 1
b. 2
c. 3
d. 6
e. 8

Biology & Microbiology

Cardiac muscle cells are both _____

A) striated and interconnected by intercalated disks B) smooth and under voluntary control C) striated and under voluntary control D) smooth and under involuntary control

Biology & Microbiology

The openings in leaves that function to exchange gases are called ____

a. cuticles b. stomata

c. guard cells d. pits e. pores

Biology & Microbiology

The use of Salvarsan and Prontosil to treat microbial infections were early examples of

A. antibiotics. B. toxins. C. inhibitors. D. chemotherapy.

Biology & Microbiology