Why are forests a renewable resource

yes they are renewable.

Explanation:

Trees are a natural resource that can be renewed by (the planting of trees) replacing the trees that are harvested for use by people. We depend on forest products for things like the wood we burn for heat and the wood we use to make houses and furniture. We use trees for the paper to make books and letters we write. Actually, there are more than 5,000 things made from trees. Trees give us baseball bats, shoe polish, and even tooth paste that comes from tree extracts.

thinking it would be physical characteristics