FORESTRY
GENETICS TREE IMPROVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The formation of holes in the Earth’s ozone layer due to chemicals used by humans allows more ultraviolet (UV) light to reach the oceans. Increased UV light can kill phytoplankton, marine algae and other microorganisms.Which of the following explains the most likely effect of increased UV light on alpine and polar lakes that are very clear?
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The increase in solar UV radiation would increase the rate of mutation in microorganisms such as phytoplankton and algae, so that they would no longer be healthy food source for marine animals.
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the UV light would raise the temperature of the alpine and polar lakes, which would help the microorganism repair themselves.
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The UV light would stimulate photosynthesis, resulting in a more stable ecosystem.
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The UV light would penetrate to a greater depth in lakes that have clear water, potentially doing greater damage to the ecosystems.
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Explanation:
Detailed explanation-1: -The ozone hole has developed because people have polluted the atmosphere with chemicals containing chlorine and bromine. The primary chemicals involved are chlorofluorocarbons (CFCs for short), halons, and carbon tetrachloride.
Detailed explanation-2: -A collection of human-made greenhouse gases known as ozone-depleting substances (ODSs), including chlorofluorocarbons that can be found in everyday products such as air conditioners, refrigerators, and aerosol cans, have been destroying the ozone layer.
There is 1 question to complete.