Answer: petroleum
because it is a fossil fuel like coal, and natural gas.
Oxygen gas was most likely absent from Earth's primitive atmosphere. The current theory is that the Earth's early atmosphere was composed of mainly carbon dioxide and methane due to the high volcanic activity. Cyanobacteria and their use of photosynthesis was what caused earth's atmosphere to become oxygen enriched.
I hope that helps.
If 1mol ------- is ----------- 6,02×10²³
so x ------- is ----------- 1,39×10²⁴
Answer:
The right objective is A I guess
