a) ""Energy flow in a food chain is unidirectional"". Justify the statement. b) Explain how ozone being a deadly poison can still perform an essential function for our environment.
Answers
Answer:
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Explanation:
(a) The flow of energy in food chains is unidirectional. The energy which passes to the herbivores does not come back to the autotrophs. The energy that is captured by the autotrophs does not revert back to the Sun. Therefore, in the food chain, the energy moves progressively through various trophic levels.
(b) Ozone layer is deadly poisonous because it is combination of 3 oxygen atoms which make it highly reactive which is not good for our body system and it is essential because it shields the surface of the earth from the entry of UV rays from the sun which can harm us by causing skin burnings and skin cancer.
Answer:
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Explanation:
Ozone is made up of 3-oxygen molecules. Ozone present in the atmosphere prevents the harmful UV rays from the Sun to fall in Earth. Ozone is created by sunlight which breaks up the oxygen present in the atmosphere into two atoms and those two atoms merge with the existing oxygen atoms to form ozone.
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