some, but much less than the amount it absorbs. Also, as an alternative to fertilizer, it reduces co2 (fertilizer production admits a lot of co2)
Animals emit CO2 when they exhale.
It absorbs Co2 through the process of Photosythisis.
No. Plants emit their own CO2 through respiration.
Yes, infact vehicles are considered to be the main contributor to the Co2 in the atmosphere
1% of the worldds emissions
Once a flower is cut and starts dying it does emit CO2 as it decomposes.
Too much !
double the amount as planes.
i dont know do the math
No, milk should not be put in the compost pile.Specifically, the drink can be grouped with dairy products. Dairy products emit unpleasant odors as they decompose. The liquid and the smell may attract wildlife to the compost pile.
Co2 is not needed for animal life, in fact it is poisonous. They breathe it out as a by product from using energy. However, plants must have co2, and emit oxygen as a by product.
Definitely the burning of fossil fuels. Volcanoes emit around 100,000,000 tons of CO2 a year. Man-made emissions of CO2 comes to about 10,000,000,000 tons of CO2 per year. So volcanoes emit around 1/100th of CO2 that we do.