Biology

do you mean fuels? nuclear energy is the best alternative energy source.

A food web pyramid.
The ecological pyramid, also referred to as the energy pyramid.

The correct answer is Oxygen, otherwise air. (APEX)

CO2 (Apex)

The plants that use photosynthesis would die because the plants would not create food. They would die of hunger. Without another source of food, most of the animals would likewise die off. Most life would die anyway because the oxygen released by the plants would no longer enter the atmosphere to be used in respiration. Photosynthesis is an irreplaceable part of the carbon cycle, on which the vast majority of life on Earth depends.

Percolation leads to water entering an aquifer.

The light reactions provide the energy carriers used in the Calvin cycle

The thylakoid will have fewer hydrogen ions.

From the motion of hydrogen ions

from the kinetic energy of hydrogen ions passing through ATP synthase

They come from Photosystem ll. Photosystem ll gets them by ripping the electrons off of water by a process called photolysis.

Electrons gain energy first in Photosystem ll, then later in photosystem l, through the absorption of energy from light.

ATP is produced for use by cells.