Answer:
while cutting the pizza, the knife slipped and Carl cut "himself"
Explanation:
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B. because they are not manufactured by the body
Cells divide in an effort to reproduce and create more of themselves to keep their larger- encompassing species sustained.
Carbohydrates such as glucose, cellulose, deoxyribose, fructose, etc
Nucleic acids such as DNA, mRNA, tRNA
Proteins such as structural proteins and enzymes