Your answer is B.
Because it says that that carbon burns in presence of oxygen (C+O) which is equal ( => ) to Carbon Dioxide (

)
i think helium hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
Climatology is a subspecialty of Meterology.
Decrease temperature and decrease of concentration will decrease reaction rate, because less molecules will be able to react.
Answer:
For bromine, the dark red color disappears quickly as the atoms of bromine bond with the atoms of carbon in the double bond.
Explanation: