What practices are commonly used in carbon sequestration?

The first choice highlights two significant practices in carbon sequestration: planting trees and pumping carbon dioxide deep into the ocean. Planting trees is a natural method of sequestering carbon, as trees absorb carbon dioxide from the atmosphere during the process of photosynthesis, storing carbon in their biomass and helping to mitigate climate change.

Meanwhile, pumping carbon dioxide deep into the ocean can be part of geoengineering strategies aimed at removing carbon dioxide from the atmosphere by storing it in oceanic basins. This method can potentially help in reducing overall greenhouse gas levels if done responsibly, as the ocean can absorb significant amounts of carbon. Together, these practices embody both natural and technological approaches to carbon sequestration, which are essential for addressing climate change by capturing and storing atmospheric CO2.

In contrast, other choices do not accurately represent carbon sequestration practices. Burning fossil fuels, for instance, releases carbon dioxide rather than sequestering it, and while reforesting (mentioned in the second choice) contributes to carbon capture, the act of burning fossil fuels negates any benefits. Storing carbon underground, referenced in the third choice, can also be part of carbon capture and storage (CCS), but the combination with biofuels is misleading since biofuels can still