What is an example of predation?

A) the camouflage of a lizard in rocky habitats
B) a hawk swooping down quickly to capture, kill, and eat a prairie king snake
C) a goldfinch feeding on the seeds of a thistle plant
D) the vivid colors of the poison-arrow frog in Costa Rica


Ans: B) a hawk swooping down quickly to capture, kill, and eat a prairie king snake

Biology & Microbiology

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Cystic fibrosis is a recessive disorder. If a

couple, each of whom is heterozygous, have children, what is the probability that they will have a child with cystic fibrosis?

a. 0% b. 25% c. 50% d. 75% e. 100%

Biology & Microbiology

As it leaves the lung in the pulmonary vein, blood is ________ saturated with oxygen.

A) 90% B) 98% C) 108% (supersaturated) D) 100% (completely) E) 75%

Biology & Microbiology

A seedling growing toward the source of light is an example of:

a. shade avoidance. b. a positive hypersensitive response. c. a negative hypersensitive response. d. a positive phototropic response. e. a negative phototropic respons

Biology & Microbiology

A stage in embryological development which is a solid ball of cells is a 

A. gastrula. B. fetus. C. blastula. D. morula.

Biology & Microbiology