The tree machine

Humanity needs oxygen and a tree is a beautiful machine from where we get it.

When machines, in general, are polluting and making noise, trees make, clean and filters noise. God Our contribution we can give make is kept to not use our engines in order and to walk when there isn't a long distance to take. (*1)

Also, machines need coal, gas, and electricity. Its A tree's (*2) fuels comes from water, sunlight, and/or carbon dioxide. As good "housekeepers" we can recycle, use biodegradate products, (*3) and don't not waste food.

When a tree dies, it gives nutrients to the soil for other trees to (*4) use as fuel. So, the tree does not dies really really die. It recycles its substance for the benefit of all animals and plant life.

(1) Science and Children, Washington D.C., National Science Teachers Association, March 1985.
(2) "We are all housekeepers" Time, June 1997.

You only have a few errors. Other than these, it looks great! Good job!

(*1) This sounds better as, "and walk when it's a short distance."

(*2) The "Its" you wrote here sounds like it's referring to "machines" in the previous setence. By putting "tree" you avoid ambiguity. 

(*3) It's a choice of style, but I prefer the oxford comma when making lists. "... we can recycle, use biodegradable products, and not waste food"

(*4) It's necessary to put "to" when following with a verb in the infinitive.