Answer: C and B. Coastal deserts are usually found in the midlatitude in the western parts of the continents. In these regions, cold oceanic currents go parallel to the coast and produce heavy fogs drifting over deserts. Although the humidity of coastal deserts can be high, rainfall remains fairly low. Examples of coastal deserts include the Atacama Desert (Chile) and the Namib Desert (Namibia).
It is believed by the scientist that vaccinating the entire populace is not a good idea seeing that the vaccine has side effects.
<h3>What is smallpox?</h3>
Smallpox is a skin disease caused by a virus called the variola virus. It manifests by the development of blisters filled with pox on the skin of humans.
Smallpox led to the death of scores of numbers of people until it got eradicated by WHO in 1980.
Learn more about the Smallpox here
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Basically it starts out with a community and once it's expended and reproduced, their generations (sons and daughters) pass on the things they have learned like traditions or skills or clothing. And then over time they just keep expanding and growing and repeating the cycle!