12.Ecosystem
normal

The phosphates remain outside the natural cycle for a long time

A

When they form compounds with metals

B

When they are incorporated in bone and teeth

C

When the bodies of the organisms excrete and decompose

D

Both $(a)$ and $(b)$

Solution

The phosphate remain outside the natural cycle for a long time when they form compounds with metals and are incorporated in bone and teeth.

Standard 12
Biology

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