Secondary since plants/animals already lived there, but got killed/driven out of the area they lived/thrived in/on.
They are related because the high pitch sounds correspond to the sound waves which give high and low frequencies.
Combustion of fossil fuels release massive amounts of carbon dioxide
I am sure 100%
Good luck
Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis.
