A part of the definition of binary fission is "splitting in half." It is an asexual form of reproduction, one turns in to two. This is choice B.
Answer:
Adenine (A) with Thymine(T)
Cytosine(C) with Guanine(G)
Calcium
Calcium helps build and maintain bones.
<span>By filtering the air so that the lungs so the lungs don't get infected</span>