If a big building is built by cutti

If a big building is built by cutting woods in the mountain, who can get the benefits? The answer is ourselves, that is, the human only! The animals where lived originally must be left and the nature must be worse. This is just human activity, and we can say that we do the Earth harm.

Of course, there are human activity which is considered the nature environments. For example, building a green park in the top of a building is a good plan to protect global warming. However, it is just a little thing and most human activities is not considered "the Earth".

In the avobe opinion, I think that the Earth is being harmed by human activity, so we must solve this problem sooner.