Question

*_______ is an example of a useful change.*

1️⃣ Ripening of fruit
2️⃣ Rusting of iron
3️⃣ Copper turns green
4️⃣ Falling of tree​

Answer 1

Answer:

option 1

Explanation:

ripening of fruit

Answer 2

Answer:

Hii

I guess the correct option is 3.

Copper turns green

Hope it helps..