Question

write the name of harmfull substances

Answer 1

Some harmful substance are:-

[1] Drugs
[2] Alcohol
[3] Cigarrettes

▶It can damage the lungs, Body organ and change the way of person think and act.

Answer 2

A harmful substance is one which harm to our body or health and could cause a problem if taken. These substances could be gases, liquids, food we eat, water etc.

Hope.....Helpful for all