Did the addition of rooting compound make any difference in the time it took to develop roots? did it make any difference in the length of the roots produced?

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 can an organ, such as the lungs, work for multiple body systems?

The diagram shows a chicken embryo and a human embryo