B. Only words ,letters,and fonts
Answer:
1,3,4
A dichotomous key uses questions or statements to help identify organisms, it also uses characteristics in it's questions ( that may be yes-no) and statements to help separate organisms from one another.
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Explanation:
D. Enzymes and antibodies
Uring this period he became acquainted with Osama bin Laden, a wealthy Saudi who had joined the Afghan resistance to the Soviets,