Question

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(ii) Why do more and more people prefer to use condoms? What is the principle behind
of condoms?
236 (1) Name the organisms which belong to first and third trophic level in food chain comprising
of the following:
Insects, birds, frog and grass.
(ii) What will happen if we kill all the organisms in one trophic level?
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Answer 1

Answer:

Atmosphere electricity was discovered by.

Answer 2

Answer:

1) grass is the first and frog is the third organisms