3) a
due to how the nucleus makes up cell chromosomes as to multiplying and etc
<span>Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants. There are various types of chlorophyll structures, but plants contain chlorophyll a and b.</span>
Perihelion marks the begging of summer when the earth is closest to the sun.
Definitely cell, tissue, organ. Well atleast that's what I remember. The others would be : B: call, organism, population c: organism, community, and bioshpere and then atom, molecule, organelle. so A is the only one in correct order fro what I seem to see. Hope I helped.