Most amphibians are completely dependent on an

aquatic environment for
a. respiration.
b. feeding.
c. reproduction.
d. respiration and reproduction.
e. respiration, reproduction, and feeding.


Answer: c

Biology & Microbiology

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Photosynthesis and cellular respiration are examples of ____

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Heterozygotes for the sickle-cell allele show higher fitness than either homozygote genotype in malarial regions. This is an example of

A) epistasis. B) pleiotropy. C) founder effect. D) overdominance. E) codominance.

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Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called

A. thermophiles. B. barophiles. C. extremophiles. D. halophiles. E. psychrophiles.

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The distinguishing characteristic used to classify the algae into four kingdoms is

A) whether they are single celled or multicellular. B) their cell wall components. C) their storage products. D) their habitat. E) presence or absence of chlorophyll a.

Biology & Microbiology