All plants autotrophic. But there are no autotrophic animals or fungi. What does it mean when an organism is "autotrophic"?

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

What organ is the first to receive nutrients that have been absorbed from the digestive tract?