4. ¿Cuáles son las diferencias entre endorfinas y alcaloides?

What best describes emerging scientific ideas

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?

If a keystone species is removed from an ecosystem