Answer: The angle of the slope
Ghyjgj
gbhf ghbgf g h
fgh gh fgh f
gfhgfh
gh
gh
gfh
gh
gh
gf
h
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.
In the Atlantic Ocean / or Ocean