Which two body systems must directly interact for vertebrate organisms to exchange gases? F Skeletal system and muscular system
G Excretory system and reproductive system
H Circulatory system and respiratory system
3 Digestive system and immune system

What is one function of the embedded proteins

Quick asap will give brainiest ! what best describes the same pattern of tides on earth throughout the day? neap tides spring tides semidiurnal tides nocturnal tides

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass