Answer the question below:   Jimbo was playing with magnetic field lines by manipulating them. If he moves the field lines closer together, what happens to the strength of the field increases or decreases?    Assuming that:  The closer the field lines are drawn together, the stronger the field being described.
increases

Answer the question below:   We don't need oxygen masks when we descend Everest because the air pressure is low or high?    Assuming that:  Air pressure is less at higher elevations.
high

Answer the question below:   More oxygen absorption means more or less oxygen in the blood?    Assuming that:  Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.
more