The niche of a fish is defined by ______________.

a. temperature
b. salinity
c. pH
d. other species of fish
e. All of the above
f. I don't know the answer


Ans: e. All of the above

Biology & Microbiology

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The primary reason for hybrid sterility is

a. the inability of the hybrid to attract a mate. b. the difficulty in finding a suitable habitat in which to survive. c. that the hybrids are usually weak and have difficulty surviving to reproductive maturity. d. that hybrids cannot produce viable gametes. e. the inability of the hybrid to develop an appropriate courtship pattern.

Biology & Microbiology

In regards to a species' life history, opportunistic species

A. are long lived. B. provide extensive care for their offspring. C. are limited primarily by carrying capacity. D. reproduce later in life. E. produce many offspring.

Biology & Microbiology

In what type of mating system would sexual dimorphism be unlikely?

A. monogamy. B. polygyny. C. polygamy. D. polyandry. E. polygamy and polyandry.

Biology & Microbiology

Most evidence indicates that skin color is controlled by how many gene pairs?

A. One B. Two to three C. Three to four D. Five to seven E. More than twelve

Biology & Microbiology