Answer:
Cell membrane surround cells, but cell wall is an extra covering outside plant cells, made up of cellulose
Answer:
MRI = Electromagnet
Moon = Not magnetic
Compass = Permanent magnet
Metal and non metal is a covalent bond
Answer:
Ants and aphids have a special relationship, mutualistic in nature
Explanation:
hey each benefit from one another; ants protect aphids and aphids feed ants. Aphids feed their farmer ants a sweet honeydew liquid in exchange for protection from predators.