Question

give scientific reason. a) when acid rain flows into the rivers the survival of aquatic life becomes difficult. b) Tooth pastes are used for cleaning the teeth.​

Answer 1

Answer:

Hi

Explanation:

1:When acid rain flows into the rivers, the survival of aquatic life becomes difficult bcz the acidic rain changes the PH value of the water present in the sea i.e The eggs of fish cant hatch in a water with a PH value of 5. Etc.

2:Tooth pastes are used for cleaning the teeth.It is because tooth pastes are of differnet types, differnet tooth pastes contain differnet chemicals.These chemicals make our teeth clean, on the other hand they have side effects too but the companies havent dosclosed it.

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