Adiet rich in can reduce the risk of many birth defects

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 largest unit within which gene flow can readily occur is a

Can an organism fill more than one trophic level?