All of the food have Carbon in them bc everything have carbon in it even humans
Exchange of gases in fish is very efficient because of: the large surface area of the gills. the large surface area of the blood capillaries in each gill filament. the short distance required for diffusion – the outer layer of the gill filaments and the capillary walls are just one cell thick.
the answer would have to be Democritus
Increased use of antibiotics since the few that are immune will survive and reproduce and will out grow others that arent.