Answer:
water molecules
Explanation:
In photosynthesis, electrons that travel through the electron transport chain in the thylakoid membrane come from water molecules.
Water molecules supply electrons for electron transport in photosynthesis.
Answer:
Number of protons plus the number of neutrons.
Explanation:
Most of an atom's mass is in its nucleus. The nucleus is made up of protons and neutrons.
Its the Eccentricity of the earth. (shape of Earth's Orbit around the sun, whether it is more circular or ovular.)
