Question

Q1. Why are some substances biodegradable and
some non-biodegradable?​

Answer 1

Explanation:

The main reason of a substance being biodegradable is being organic that can be used up by scavengers of environment. On the other hand some substances are non biodegradable because they are synthetic and cannot be decomposed by the microorganism.

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Answer 2

Answer:

substances are bio and non bio degradable bcoz not to mix both cozz bio degradable waste is dry waste and non bio is wet waste soo not to mix them up soo if we mix them up then disease will spread that's why

Explanation:

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