Answer:
a
Explanation:
its a semi permeable membrane. it chooses what can go in and out so nothing bad happens.
In Science, a electron in an atom is always negative. The more electrons you have, the more negative a atom is. The more protons (Positives) you have, the more positive a atom is. To balance an atom out, have the same amount of Electrons and Protons.
Answer and Explanation:
Oceanic crust has a different density amount than continental crust. So since the oceanic crust is actually denser than continental, when plates collide. Oceanic would be the crust to sub duct under continental crust
I think C because scientific research can make them humans do
