The Earth is populated mostly by single-celled organisms, such as bacteria. However, there are many multi-celled organisms as well. Which of the following is a multi-celled organism? A. insect B. hu

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The Earth is filled in-great-measure by single-celled organisms, such as bacteria. However, there are sundry multi-celled organisms as well-behaved. Which of the subjoined is a multi-celled organism?

A.

insect

B.

human

C.

flower

D.

all of these

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