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The amount of energy as it passes on from one trophic level to others in an ecosystem
  • a)
    increases
  • b)
    decreases
  • c)
    remains constant
  • d)
    none of these
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
The amount of energy as it passes on from one trophic level to others...
The amount of energy in an ecosystem decreases as it passes from one trophic level to another. For example, in a food chain not 100 percent of energy is transferred from one
trophic level to the other as only a fraction of it is transferred and rest is lost to the atmosphere.
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Ecosystems provide people with a variety of goods and services; food, clean water, clean air, flood control, soil stabilization, pollination, climate regulation, spiritual fulfilment and aesthetic enjoyment, to name just a few. Most of these benefits either are irreplaceable or the technology necessary to replace them is prohibitively expensive. For example, potable fresh water can be provided by desalinating sea-water, but only at great cost. The rapidly expanding human population has greatly modified the Earths ecosystems to meet their increased requirements of some of the goods and services, particularly food, fresh water, timber, fibre and fuel. These modifications have contributed substantially to human well being and economic development. The benefits have notbeen equally distributed. Some people have actually been harmed by these changes. Moreover, short-term increases in some ecosystem goods and services have come at the cost of the long-term degradation of others. For example, efforts to increase the production of food and fibre have decreased the ability of some ecosystems to provide clean water, regulate flooding and support biodiversity.Q. With reference to the passage, consider the following statements:1. It is imperative to modify the Earths ecosystems for the well being of mankind. 2. Technology can never replace all the goods and services provided by ecosystems. Which of the statements given above is/are correct ?

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The amount of energy as it passes on from one trophic level to others in an ecosystem a) increasesb) decreasesc) remains constantd) none of theseCorrect answer is option 'B'. Can you explain this answer?
Question Description
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