The molecules doesn't need energy to cross through.
The diffusion doesn't need protien, the molecules pass between phospholipids by passes protien. It moves smaller molecules. Facilitated need protien also hormone, and larger molecules.
I wish it makes sense.
C: The arrangement and movement of the particles in the substance. Solid particles vibrate and are compact. Liquid slide past each other and are close together. Gas particles are fast moving and very spread out.
<span>The primary psychosocial milestone of childhood is the positive development of self-concept. This usually begins at 18 months, but continues throughout childhood. Self-concept is simply how one views oneself and one's abilities.</span>
Answer:
i want to say B because they experiment and get multiple types of results