Iron, and sulfur form the reactive portion of nitrogenase, a biological catalyst used by nitrogen-fixing organisms. fe co zn cd mo

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

Facilitates growth and change in neurons and the migration of neurons to different sites in the brain

Which layer will become saturated first when rain falls?