Answer:
A. active transport
Explanation:
active transport is the movement of a substance across a membrane against its concentration gradient.
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Answer:
conservation of natural resources
Explanation:
You're trying to save resources, all the other options cause harm
Answer:because it doesn’t need to consume energy to survive, nor is it able to regulate its own temperature.
Explanation:
Answer:
weathering
Explanation:
roof could leak and the weather will get in