Its autotrophs, they are the first level of the food pyrimid
I think you might've forgotten something. There is no labels, pictures, or any options. Add some more stuff and I'd be able to help out.
Answer:
Petroleum gas is mainly C3 and C4 based (propane and butane), whilst natural gas is predominantly C1 and C2 (methane and ethane). Petroleum gas is generally produced via the cracking of naphtha, which is one of the components separated during crude oil refining.
Explanation:
Tge system that coirdinate and send message to the body is the nervous system
