Answer:
d
Explanation:
Fishes are aquatic vertebrates having scales, pharyngeal gill slits and paired fins. ... Most fish are ectothermic ("cold-blooded"), allowing their body temperatures to vary as ambient temperatures change. fishes have scales that covers the skin of fishes. Thus, the correct answer is option D.
Estuary is a partly enclosed coastal body of water by which river water is mixed with seawater. In a broad sense, the estuarine setting<span> is defined by
salinity boundaries instead of geographic boundaries. The word estuary is derived
from the Latin words aestus (“the tide”)
and aestuo (“boil”), signifying
the effect produced when tidal flow and river flow meet.</span>
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The Potential Energy of an object depends upon its position.
Apoptosis is programmed cell death. The body is this to get rid of unneeded or abnormal. The body will get rid of cells with damaged DNA before they can become cancerous.
