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.
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I guess the correct answer is option B
Lichen will colonize the bare rock.
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The weather and time do affect crime. The time of day, like late at night, is when most crimes occur. Since it's dark out, the criminal won't be seen as easily compared to during the day. Crime also spikes during warm weather since it seems to be easier for the criminal.
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