What is the definition of absorption?

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

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