Answer:
connective tissue, epithelial tissue, muscle tissue, and nervous tissue.
Explanation:
Answer:
The main difference between sieve tubes and companion cells is that sieve tubes are the long, narrow, pointed tubes present in the phloem of angiosperms whereas companion cells are attached to the sieve tubes, regulating the activity of sieve tubes.
The answer is: "global" .
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D a change in color of a subtance
