Decomposers are essential in breaking down organic matter into useful ones. For the nitrogen cycle, they break down bodies of dead organisms turning it into ammonia. Also, some bacteria break down nitrates turning into nitrogen which goes back to air.
Capillaries are the end structures in the artery system that bring oxygenated blood from your lungs to the rest of your body.
Explanation:
.For the our health because if the environment is saved the we are able to get the fresh air.
.For decreasing global warming because if environment is saved then the pollution is controlled.
.For decreasing deforestation which can control landscape because saving the environment can also be taken as saving trees.
For saving the animals because the habitat of animal is forest which need to be protected by protecting environment.
.For saving the natural resource which are also the reasons of income because it attracts tourists.