Question

How does biofuel help agriculture and reduce air pollution?

Answer 1

By reducing greenhouse gas emissions

Explanation:

Depending upon type and supply-demand locations, biofuel may help to reduce greenhouse gas emissions.

Most studies have found that producing first generation biofuels usually yields reductions in greenhouse gas emissions of 20 to 60% when fossil fuels are replaced provided the most efficient systems are used and carbon dioxide emissions from changes in land-use are excluded (Greenfacts, 2017).

Ethanol produced from sugar cane in Brazil and second-generation biofuels typically reduce emissions by 70 to 90%, again excluding carbon releases related to land-use change (Greenfacts, 2017).

Reference:

GreenFacts (2017). Liquid Biofuels for Transport Prospects, risks and opportunities. Available on the internet. Retrieved 13 June 2017: https://www.greenfacts.org/en/biofuels/l-2/4-environmental-impacts.htm