After seeing many examples, what conclusions about earths systems can you make?

What is the primary function of the nervous system?

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

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