Sagot :
I think It is letter C. Forrest are breeding ground of wildlife that supports balance of nature.
for me, its all of them above, forest ecosystem is very necessary for us, yes! the wood used constructing buildings, river and lakes would become dry without the forest ,they breeding ground of wildlife that supports balance of nature, and forest provides food to human beings and other lower forms of animals. but typically its going to be letter C and D.