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How has DDT caused decline in bird popul...

How has DDT caused decline in bird population ?

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High concentrations of DDT disturb calcium metabolism in birds , whish causes thinning of egg shell and their premature breaking, eventually causing decline in bird populations.
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Biomagnification of DDT caused decline in bird population by:

Biomagnification of DDT causes decline in bird population by:

Assertion: Biomagnification of DDT can enhance the decline in bird population. Reason: DDT causes thinning of egg shell and their premature breaking by disturbing calcium metabolism.

A : Biomagnification of DDt can enhance the decline in bird population. R : DDT causes thicking of egg shell and their delayed breaking by disturbing calcium metabolism.

Ornithologists observed decline in the bird population in an area near a lake after the setting of an industrial unit in the same area. Explain the cause responsible for the decline observed.

Our farmers still use DDt. How is the affecting the local bird population ?

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