Презентація "Starfish"

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Presentationstudent 9-A classAlyona Bondar

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Starfish - interesting and mysterious animal.

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Starfish - a veteran of the seabed, it appeared over 450 million years ago.

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It belongs to a class of echinoderms.

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From the outside it is covered with short needles or pins.

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Every ray of starfish, being separated from her body, it is viable and quickly regenerates.

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Sea stars are voracious predators, although there are exceptions in the form of herbivorous species feed on algae.

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Some starfish even able to dig up prey that is hiding in the sand.

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Life starfish can reach 30 years.

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At present there are about 1,600 species of sea stars.

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