Environmental Sciences, asked by boswassourav3889, 6 months ago

Useful and harmful materials

Answers

Answered by parmodkumar89527

3

Answer:

l hope its help you

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Answered by kanishkas70

1

Answer:

Useful material=very used for us in any situation.

Example :water

Harmful materials =used at work for harm our skin,liquid and health.

Example :oven cleaner

Explanation:

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