A water-vascular system that operates the tube

feet is characteristic of the



a. arthropods.
b. annelids.
c. chordates.
d. mollusks.
e. echinoderms


E

Biology & Microbiology

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Indicate whether the statement is true or false.

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Why do many non-native species, such as a prickly pear cactus brought to Australia from South America, rapidly become abundant when first introduced?

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