How can biological knowledge be applied to preserve the nature around us?

Biology is a very important science for every person, and the knowledge gained as a result of studying this subject is very important for all people to use to preserve nature. After all, we are all part of it, and if our world around us suffers, then we ourselves will suffer along with it. For this, each person does not have to throw garbage and, thus, not pollute the environment. Build birdhouses and feed stray animals during the cold season, thereby preserving different populations.