The active transport can be defined as the transport which is uses energy to transport materials.
The materials from the inside of the cell is transported to the outside of the cell or the materials from the outside of the cell is transported to the inside of the cell.
There is a need of energy because the substance needs to move against the concentration gradient.
The next high tide will occur approximately 12 hours after the first one. So your answer choices would be B or C. I feel like the better answer choice is C. If this is wrong, feel free to delete this answer.
