There are many ways you can reduce power consumption.
You can take shorter showers, turn of your lights before leaving the house, using less appliances. If you need more, comment below. Hope this helps..
The answer is; the melanin in darkly pigmented skin protects DNA from UV radiation, and UV radiation can cause skin cancer
In Africa, due to its equatorial latitude location, receives direct sunlight at more or less 90 degrees most of the year. These highly concentrated rays increase the UV radiation exposure that can cause damage to cell DNA. Selection pressure, therefore, favored individuals with high melanin concentrations that protect against UV. Therefore population evolved towards high melanin densities in the skin.
The answer for this should be D
Answer:
An atom is composed of subatomic particles (electron, neutron and proton), a nucleus and electron cloud. Electrons are negatively charged particles that reside in an electron cloud that revolves around the central nucleus. ... A molecule is composed of two or more atoms that are held together by a strong chemical bond.
Explanation:
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