Mosses were one of the first plants to even evolve.
U·ni·cel·lu·laradjective
BIOLOGY(of protozoans, certain algae and spores, etc.) consisting of a single cell.(of an evolutionary or developmental stage) characterized by the formation or presence of a single cell or cells.
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Leather shoes are made from natural polymers; raincoats are made from synthetic polymers."
<span>A mountain range makes it harder for winds to carry clouds over a mountain, so one side gets almost all the rainfall and the other side gets almost none.</span>