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Ecdysis is the moulting of the cuticle in many invertebrates of the clade Ecdysozoa. Since the cuticle of these animals typically forms a largely inelastic exoskeleton, it is shed during growth and a new, larger covering is formed. The remnants of the old, empty exoskeleton are called exuviae.
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<em>the establishment of a hierarchical system of categories on the basis of presumed natural relationships among organisms. </em>
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I believe your answer would be A
Explanation:
Water Vapor,Ozone ,Hydrofluorocarbons
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prokaryotic cells do not have a nucleus or membrane bound organelles.They also have small rings of double-stranded extra-chromosomal DNA called plasmids.