What structure contains ameba's dna

Number and variety of living organisms includes genetic, species, and ecological types

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone