~Hello there!
Your question: What substance is considered a building block for all living things?
Your answer: Carbon is the substance that is considered s building block for all living things.
Any questions ^?
Happy Studying!
Answer:
It controls opening and closing movements of the stomata, but that isn't one of the answer choices.
Explanation:
<span>Hydrosphere means water-sphere.
The only answer that talks about water is "Water moves between Earth’s surface and the atmosphere" </span>
So the DNA can be copied to make more of themselves.<span />
B. the outer most layer of the sun's atmosphere
