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प्रश्न
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
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उत्तर
Biomagnification is the process by which a harmful chemical enters the food chain and gets concentrated at each trophic level.
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संबंधित प्रश्न
What will be the amount of energy available to the organisms of the 2nd trophic level of a food chain if the energy available at the first trophic level is 10,000 joules?
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Which of the following constitute a food-chain?
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Fill in the following blank with suitable word :
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(a) insect
(b) snake
(c) frog
(d) grass
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plants → bee → human
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Name two predators of snakes in a food web operating in a forest ecosystem.
Name and state the law given by Lindeman which tells us how much energy entering a particular trophic level of organisms is available for trasnsfer to the next higher trophic level.
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Give one example of a food chain in an aquatic ecosystem?
If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be ______.
Each level in the food chain is called a ______ level.
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:

- Name the type of ecosystems that exist in food chains (b) and (c).
- The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
