Answer:
M glycoprotein..
The coronavirus attaches to a membrane protein called M glycoprotein..
1. Exchange materials with its environment efficently
Answer: <u>Sinks towards the outer core
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Explanation: The material which is less dense, means it is lighter in weight. Such substances tend to move more towards the crust of the Earth, whereas the heavier substances like iron, is more towards the core or centre of the Earth. This is because heavier substances tend to sink deeper. That’s why the light elements are found in the crust section of the Earth.
C. light-years is the best to describe the distance
I'm guessing it's the third one down