co2 and nasty stinky gases
Cars produce a kind of poisonous gas known as carbon monoxide but if you have a catalytic converter it converts the carbon monoxide into harmless gas known as carbon dioxide
Thermal energy.
Ammonia factories produce the gas ammonia (NH3).
water
Potatoes have "eyes" that produce new potatoes. The person growing them cut the potato with the eye and plant them.
Any kind of material or gas that produce energy during its combustion.
Potatoes contain alot of starch which can neutralize acids and cause gas.
potatoes
hydrogen
mash potatoes
Yes, some potatoes are able to produce a little electricity.
potatoes