Question: pollutant

Answer: (noun) a substance that makes air, water, soil etc dangerously dirty, and is caused by cars, factories etc

Question: spew

Answer: (verb) to flow out of something quickly in large quantities, or to make something flow out in this way

Question: tally

Answer: (verb) to count or to add numbers

Question: greenhouse gases

Answer: (noun) Gases in Earth’s atmosphere that trap heat near the surface

Question: atmosphere

Answer: (noun) the mixture of gases that surrounds a planet