The answers are the 3rd, 4th, and 6th options.
C, when mammals reproduce, the father and mother will both have traits that get carried over to the child.
It was the meaning of "tiny" in Greek then... atomus
Cell, Tissue, Organ, Organ System, Organism
Secondary succession occurs more rapidly than primary because soil is already available so there is no need for any other species. Also, there might still be surviving species in the soil present like seeds, roots and other plant organs.