Viruses are much smaller then cells, viruses have genetic material DNA or RNA and cells also have genetic material
American black bear, Cougar, Big Horn Sheep and some others.
Answer: Coelenterates as a whole are of little economic importance. Seldom used as food by man, they are eagerly devoured by certain fishes and by invertebrates such as the crown of thorns starfish. Certain corals used as ornaments and for the manufacture of jewelry have become rare because of exploitation.
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<em>Hope it will help you !</em></u></h2>
