Name the sources of carbon in the carbon cycle

What type of competition exsist between two species. turtles and fish

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

The effect of a hormone on a target cell may be decreased by the presence of