Photosynthesis and are considered opposite reactions. The matter is
between each process, because the products of one reaction are the reactants of the
other reaction.

cellular respiration, exchanged

Explanation:

the reactants of photosynthesis are the products of cellular respiration, and vice versa

1) cellular respiration, 2) Oxygen

Explanation:

it's cellular respiration cause it's the opposite of photosynthesis, and photosyntheis need  it's product (carbon dioxide) and the celullar respiration need the oxygen in order to make carbon dioxide

EVERYTHING IS A CYCLE

i hope it's help!!

ecotourism pay for conservation efforts.

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.