Lava<span> is molten rock. It is </span>created<span> deep beneath Earth's surface (often 100 miles or more underground), where temperatures get hot enough to melt rock. Scientists call this molten rock magma when it's underground.</span>Lava<span> is molten rock.
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Answer:
https://en.wikipedia.org/wiki/Diagram
Explanation:
You’re talking about the endoplasmatic reticulum :)
The answer is A as corals are very delicate to their surroundings
