Answer: 1
Explanation: We are taking oxygen out of the air to breathe carbon is oxygen!
The answer is bonds between atoms break and new bonds form. In order for a chemical change to happen, a new substance/substances (products) have to form that have different properties from the reactants. The bonds in the reactants break and new bonds form in the products.
Hope this helps
A. chemosynthetic bacteria =)
Im not so sure about this answer
1.5billion I don't know don't be so harsh?