It is intended to increase immunity against that antigen back to protective levels, after memory against that antigen has declined through time.
The answer would be letter A. That is because when the topsoil blows off, that piece of land is wearing away. that would be erosion. I hope i helped. Have a great day!
Answer:
Im pretty sure its Manihot esculenta. If I'm wrong please dont come for me lol.
Explanation:
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Answer:
1 and 5
Explanation:
It supports the body's weight
It allows flexibility and movement