Which sentence best explains how a unicellular organism gets rid of wastes? A. It releases them into the environment through its cell membrane.
B. It combines specialized cells into tissues that get rid of wastes.
O c. It has an excretory system that releases wastes.
D. It relies on individual specialized cells to get rid of wastes.

A. It releases them into the environment through its cell membrane.

Explanation:

Many unicellular organisms excrete waste products by diffusion from their body surface due to their small size.

answer; ///(b) it is composed of four protein chains and four heme groups;

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explanation:

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