Why do amphibians need a moist environment?

A) Amphibians eat only aquatic organisms.
B) Amphibians require a moist environment to support their body weight because their cartilaginous skeleton is weak.
C) Their eggs have only a jelly-like coating that needs to stay moist.
D) Amphibians require a moist environment for their scales to develop.
E) The gills of the adult won't work if they dry out.


C

Biology & Microbiology

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Indirect development in sea urchins involves the presence of a _________________ stage.  

Fill in the blank(s) with the appropriate word(s).

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