Q. 2. A. Give scientific reasons. (any two)
1. Energy flow through an ecosystem is 'one way'.
2. Why are naphthalene balls kept with clothes to be put away.
3. Flow of nutrients through an ecosystem is cyclic.
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1. Energy flow through an ecosystem is 'one way'.
Ans. So, the energy that is captured by the producers does not revert back to the Sun and the energy transferred to the herbivores does not come back to the producers. It just keeps on moving to the next trophic level in a unidirectional way. That is why the flow of energy in the food chain is always unidirectional/one way.
2. why are naphthalene balls kept with clothes to be put away
Ans. Naphthalene balls sublime slowly. When they are placed in clothes, they sublime without leaving any residue and there role is to ward off any kind of insects which could damage the clothes.
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