B is the compound because a compound is two or more different atoms that combine.
The answer is C because the load shouldnt be greater than the effort, it isnt usually, but my best answer to you would be C
Out of the options I would have to say Penetrating Keratoplasty, I am not sure
<span>Enzymes are crucial contributors to protein digestion. Protein-digesting enzymes are referred to as proteinases or proteases. Protein generally takes the form of very complex molecules arranged in chains of amino acids. So the bonds binding these complex molecules together must first be broken down
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