Biology, 30.07.2021 04:30 garrettcameron12
Sea urchins belong to the echinoderm phylum. Adult sea urchins have spines that extend outward from their exoskeleton, but as larvae, the sea urchins have only an exoskeleton made from spicules. The spines offer protection against predators. The population size of sea urchins is low in relation to the carrying capacity of the area. As a result, the sea urchins are Multiple choice question. A) r-strategists that allocate much energy toward parental care. By-strategists that allocate energy to producing many young. C) density-independent, because there is plenty of energy. D) irruptive, because their numbers crash quickly.
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Sea urchins belong to the echinoderm phylum. Adult sea urchins have spines that extend outward from...
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