When fossil fuels are burned, they produce ________________, the main greenhouse gas responsible for global warming trends.
Use the word bank below to answer the questions that follow:

landfills
limiting factor
nonpoint source
habitat destruction
stop
migration
biodiversity
carbon dioxide
reverse
carrying capacity
commensalism
selective cutting
extinction
adaptation
ozone layer
population density
nonpoint source
succession
fossil fuel
ecological footprint
symbiosis
point source
competition
cost-benefit