Complex sentence: As a greenhouse gas mitigation strategy, switchgrass pellets were found to be an effective means to use farmland to mitigate greenhouse gases on the order of 7.6-13 tonnes per hectare of CO 2.
Split into simpler sentences: As a greenhouse gas mitigation strategy, switchgrass pellets were found to be an effective means to use farmland to mitigate greenhouse gases. Using farmland to produce switchgrass pellets could mitigate 7.6-13 tonnes per hectare of CO 2.