What are the reason of forest destruction?

Deforestation is harmful for the environment, but there area  few ecologically valid reasons to avoid timber harvest. Cutting trees provides for regeneration, improved habitat for many species, maintains forest health, and helps us shape forests for the future. For forest owners, it does all this while providing revenue.

it all depends on the are the statements? ?

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.