Answer:
Proteins
Explanation:
allow big or charged particles through the membrane
That is a true statement. Plants are producers.
The wrinkles signify that the brain is compressed which makes it take up less space in your head which makes it more eficent I guess.
Waters Lower density while in a solid form is due to how the hydrogen bonds are formed as it freezes, water molecules are apart compared to liquid water. The structure of ice makes it less dense than free flowing molecules in the liquid water, giving it the ability to float on water.
Pigments absorb light and convert it to chlorophyll molecules, each has a set of wavelengths called absorption spectrum<span />