2) what role do predators play in maintaining the balance of an ecosystem

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

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

How water is moving through the ecosystem ?