Answer:
Pigments like chlorophyll
Explanation:
The structural components that form the rungs of the ladder are the nitrogeneous bases of the DNA molecule. These bases are adenine, guanine, cytosine and thymine. Hope this answers the question. Have a nice day.
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They are cleaning themselves. they rely on their eyes antene and the bristles on their body kinda like cats and dogs use their whiskers. they have to keep themselves clean to be able to find food and sense predators.