Too much !
1% of the worldds emissions
i dont know do the math
double the amount as planes.
Volcanoes emit varying amounts of CO2 depending on their activity levels. On average, volcanoes release about 200 million tons of CO2 per year. This is a relatively small amount compared to human-generated CO2 emissions.
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.
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)
Yes, plants do emit a small amount of CO2 at night through a process called respiration.
Yes, cars emit carbon dioxide (CO2) into the atmosphere as a byproduct of burning gasoline or diesel fuel.
Animals emit CO2 when they exhale.
No. Plants emit their own CO2 through respiration.
Yes, infact vehicles are considered to be the main contributor to the Co2 in the atmosphere
An oak tree can absorb about 48 pounds of CO2 in a year.