Question

ques 1 to 3rd please answer

Answer 1

1. because that mirror helps to look the vehicles behind it closer and nearer.

3.those substance which mix uo with soil are called biodegradable and those does not mix well with soil are called non biodegradable

Answer 2

3rd the waste which are reuse
and the waste which cannot reuse is called non bio degradable and for example
garbage vehicle contains two cans red indicates non bio
and green indicates bio degradable
1st . because the driver know that other vehicles are near to him due to less focal length