Biological structures like DNA, proteins and cells all depend on molecules. ... Neurotransmitters like epinephrine are pretty simple molecules, but without them our nervous system couldn't work. Oxygen, containing just two oxygen atoms, is a very simple molecule, and it is certainly essential to living things.
Because skin falls off, or are you talking bout why don't people stick together?
Answer:
I think that they are small white stars
The answer is C because the retina is the part of your eye that transmitts the image to your brain
