i dont know do the math
Doesn't the driver ( and any passengers ) in the car emit CO2 as well, so you are not comparing like with like.You must compare CO2 from Car, driver and passengers with CO2 emitted by cyclist to be more accurate.You will need to divide the CO2 for car driver and passenger by number of occupants of car to get CO2 per person per journey
Too much !
1% of the worldds emissions
double the amount as planes.
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
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.