Ultramafic igneous rocks (those with very high magnesium and iron,and low silica content)may offer the best hope for improving the environment by
A)being placed on the ocean floor,where they can absorb water and reduce global sea levels.
B)absorbing CO₂,with their rate of absorption capable of being increased by people.
C)pulling ground-level ozone out of the atmosphere as it cools.
D)reducing the rate of salinization of soils when it is ground into a fine powder and sprinkled on the surface.

Question

Quizplus · Accepted Answer

Ultramafic igneous rocks have been shown to have the ability to naturally sequester carbon dioxide from the atmosphere. This process can be enhanced by grinding the rocks into a fine powder and spreading them in areas where CO₂ emissions are high, such as power plant exhaust stacks or alongside highways. This method is known as enhanced weathering and has the potential to significantly reduce greenhouse gas concentrations in the atmosphere.

Ultramafic Igneous Rocks (Those with Very High Magnesium and Iron,and