The Mid-Atlantic Ridge runs north and south along the bottom of the Atlantic Ocean.Which factor is likely to vary most on the two sides of this ridge?
A) Water pressure
B) Water temperature
C) Sunlight penetration
D) Benthic (bottom) life
E) Pelagic (floating or swimming) life

Question

Quizplus · Accepted Answer

The Mid-Atlantic Ridge is a boundary between two tectonic plates and is characterized by volcanic activity and hydrothermal vents. As a result, the benthic (bottom) life on either side of the ridge is likely to differ significantly due to differences in substrate, temperature, and nutrient availability. Water pressure, temperature, and sunlight penetration are unlikely to vary significantly along the relatively narrow span of the ridge, while pelagic (floating or swimming) life is likely to be influenced more by ocean currents and other factors outside of the immediate vicinity of the ridge.

The Mid-Atlantic Ridge Runs North and South Along the Bottom