Question

Volcano has both useful and harmful effects give reason​

Answer 1

useful effects of volcano are :-

1. it makes soil fertile
2. it provides valuable nutrients for the soil

harmful effects of volcano are:-

1. it makes air polluted
2. it destroy the environment .

hope it is helpful to you ☺️

Answer 2

harmful effects

1. that will cause air pollution

2. that will destroy our earth