A. <span>the compound subject is rain and wind
A compound subject is 2 or more subjects connected by 'and, or, neither, or nor'
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Proteins consist of one or more polypeptide chains. Each polypeptide chain consists of smaller sub-units or amino acids that are linked together. Amino acids serve as the building blocks of polypeptides, and polypeptides serve as the building blocks of proteins
Hope that helped!!
The answer is C. Oxen is a group of ox, similar to cacti being a group of cactus.
No idea how to answer that question sorry
