Which source contribute towards eutrophication in dead zone?

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

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