Organs<span> that aid in the process of </span>digestion<span> but </span>never <span>touch the </span>food<span> product.</span>
The answer to this question is:
Light (sunlight), water, and carbon dioxide! Oh, and chloroplasts.
Small, highly concentrated cell organelles that produce proteins are called <span>ribosomes. Ribosomes can be free-floating or attached to endoplasmic reticulum.</span>
No, this is false!
Renewable resources can be syntesized by humans, or not: some of them can, and some can't. This is not what makes them renewable, instead it's the fact that they will still be present in the nature after usage - they will be replaced (the sun will still shine tomorrow even if we harvest its power).