I think when they receive carbon dioxide
Animals emit CO2 when they exhale.
"Set off" does not have a past tense. The verb of it (to set off, did set off, will set off, have set off, had set off, ect.) will change based on the tense it is in.
attach the hopper, fill it with paint, attach the co2 tank to the back end by screwing it in tight, screw in the barrel, put in the batteries, take it off safe, and you are set to shoot.
it drops off co2 (carbon dioxide)
"Give off CO2" means releasing carbon dioxide into the air as a byproduct of a chemical reaction or biological process.
CO2 is the body's natural acid, so if your body has too much CO2 it will begin to compensate. Your body "blows off" CO2 through your respiratory system. Increased respiratory rate and depth will "blow off" excess CO2
CO2 primarily
Carbon dioxide, CO2
You cant, the CO2 that is in the marker is vented out when you take the tank off.
respiration rate would increase in order to blow off co2
it will blow up