What do all fossil fuels have in common? O A. They are all burned when used as energy sources.
O B. They are all renewable energy sources.
O C. They all produce oxygen as a combustion product.
O D. They all contain methane.

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.