Answer: C. he believes returning to get back will inspire others to make changes and do the same
Explanation:
Speciation is not a mechanism of microevolution.
Hurricane Katrina was a density-dependent factor because this disaster affected everyone in the area. It did not selectively have an effect like
Human evolution known to be a process in which species adapt to certain
conditions of life, and in the battle of life and death, they are forced
to become stronger in order to survive in this world. Diseases have
always been present during the evolution, acting themselves as a natural
selectors - the weaker organisms get sick and die. Not just humans, but
all species have to establish a great protecting mechanism in order to
survive. That is how our bodies are built, to be able to withstand and
survive in the conditions we live in, and that is why our immune system
has to be taken care of.