The main source of energy for producers in an ecosystem is a) light energy. b) kinetic energy. c) thermal energy. d) chemical energy. e) atp.

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