Question

based on the graph, which would be most effective to include in a solution to global climate change?
co₂ is a significant greenhouse gas in earths atmosphere. the graph shows the estimated anthropogenic (human - caused) co₂ emissions in gigatons (gt) per year, from 1850 to the present.
global anthropogenic co₂ emissions
moderate reduction of non - anthropogenic emissions of carbon dioxide
more efficient method for gaining energy from fossil fuels
drastic reduction in the use of fossil fuels, cement, & flaring
moderate reduction in forestry & other land use

Explanation:

The graph shows that anthropogenic \(CO_2\) emissions from fossil fuels, cement, and flaring (the light - colored bar) have a much larger magnitude compared to emissions from forestry and other land use (the dark - colored bar). A drastic reduction in the use of fossil fuels, cement, and flaring would have a more significant impact on reducing overall anthropogenic \(CO_2\) emissions. A more efficient method for gaining energy from fossil fuels would still rely on fossil fuels and not address the root cause of high emissions. Moderate reductions in non - anthropogenic emissions (which are not the main source as per the graph) and in forestry/other land use (a smaller source) would be less effective than targeting the major source.

Answer:

drastic reduction in the use of fossil fuels, cement, & flaring