I think I can answer #3 for you! Preventing deforestation isn't generally (primarily) about preventing more carbon from being released. The wood probably isn't

I think I can answer #3 for you! Preventing deforestation isn't generally (primarily) about preventing more carbon from being released. The wood probably isn't go to end up in the atmosphere any time soon regardless -- it'll go to building homes, etc. However, each tree chopped down is one less tree doing precious carbon fixing, ie, one less tree removing the atmosphere carbon that was already released.