Carbon-Oxygen
We breathe in oxygen, we breathe out carbon dioxide.
In the equation given above, there is conservation of MASS, CHARGE AND ENERGY.
These three parameters are usually conserved during the course of chemical reactions. When any of these parameter experience a reduction during the course of chemical reaction, such loss is always gained by other elements involved in the same reaction, so that at the end of the day, they are not considered as lost.
Answer:
the answer is A
Explanation:
physical changes does not change the property of matter.
Please correct me if I'm wrong but I think the answer is b or c
also sorry if i do get it wrong