This means that cleared forests, which once had moist, fertile soil and plenty of rain become barren and dry.
Id go with A because the avg for 15 year olds is about 72ish to 100ish.
True. The left side of the heart receives oxygenated blood from the pulmonary vein and pumps it into the aorta, while the right side of the heart receives deoxygenated blood from the vena cava and pumps it into the pulmonary vein.