Answer the following question given this paragraph: Carbon sequestration captures carbon dioxide as it is emitted by a power plant before it enters the atmosphere. The carbon dioxide is then stored in another form. Carbon is sequestered naturally by forests. Trees take in carbon dioxide for photosynthesis. Artificial methods of sequestering carbon underground are being researched. This is just one of the geoengineering methods that are being researched for reducing carbon dioxide. Q: What captures carbon dioxide as it is emitted by a power plant before it enters the atmosphere? Choices: - chemical sequestration - oxide sequestration - nitrogen sequestration - carbon sequestration A:
A:
carbon sequestration