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Subjects
Science State Board
Class 6
Our environment
Ecosystem and pollution

13. Trophic levels, energy pyramid, ways to dispose biodegradable and non-biodegradable wastes

Exercise condition:

5 m.

Choose the correct answer:

1. Loss of energy at each levels can be shown as

energy pyramid
food chain
food web
trophic levels

2. Food web is used to

show different feeding relationships present between species within an ecosystem.
to understand the impact of pollution
none of the above
to calculate the energy flow

3. A method that includes reusing includes

all of the above
instead of plastic bags, cloth bags can be used
instead of use and throw pens, fountain pens are used
instead of one time batteries, rechargeable batteries are used

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