Answer: effects of the evolution of photosynthesis. Photosynthetic organisms dramatically increased atmospheric oxygen levels between 2 and 2.5 billion years ago. This change created selective pressure favoring organisms that used oxygen to produce energy-containing molecules.
change the wording a little bit.
Explanation:
Answer:
4. B
5. B
Explanation:
4. In science they call water a water molecule, so that is a given
5. Metallic is described as shiny.
Over time in empty ground there grow plants: 1.lichens, 2.small bushes, 3.small trees, 4.pine trees and that area become forest.
Phospholipids, 2 layers. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the lipid bilayer with embedded proteins.
Answer:
I'm not sure I could say the sun because that's where the grass gets its energy but some people also would just say the grass but it's down to those two