Humans and modern apes have the same primitive ancestors and are close relatives. Humans should, like themselves, regard modern apes and other wild creatures as indispensable members of the biosphere and enjoy the same right to survive and reproduce on the earth. For rare and endangered modern apes, human beings should strengthen protection, such as vigorously protecting the forests on which modern apes depend and establishing modern ape nature reserves.

So the answer is: for rare and endangered modern apes, human beings should strengthen protection, such as vigorously protecting the forests on which modern apes depend, establishing modern ape nature reserves and so on.