If the forest disappear, then :-
1. the balance of atmosphere will be disturbed as forest release O2 and absorb CO2.
2.they are habitat for many plants and animals, so they will loose their home.
3. forest helps in bringing rain, but in their absence, that process will be slower.
4. we get many useful things from forest like:- wood, flowers, shade and the natural beauty.
!!!hope it helps, please mark as brainliest!!!