Which process will help reduce CO₂ levels in the atmosphere?
I. increase clear cutting of forests
II. car pooling rather than driving individual cars
III. using more renewable energy sources, such as wind or solar power
IV. generating more electricity with nuclear power

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.