The activity level of the neurotransmitter has been found to be low in people who commit suicide.

Which food could be transported in a galvanized metal container?

Number and variety of living organism; includes genetic, species, and ecological types

Prokaryotic and eukaryotic cells are different in many ways other than the presence or absence of a nucleus. if both archaebacteria and eubacteria are prokaryotic cells, then why are archaebacteria more closely related to eukaryotic cells than they are to eubacteria?