It's needed for photosynthesis and inturn it gives us oxygen
good product for alloys
good product for displacement reactions
harms
global warming
global dimming
carbon dioxide with a lack of oxygen is poisonous
A gateway substance is something that may be menial but could lead to something bigger, an example is weed in the drugs world, weed is not hard to get and is usually a gateway drug to stronger types of drugs and potentially more dangerous
