Question

A newspaper article claims that carbon dioxide is formed as follows.
1. during respiration
2. when calcium carbonate reacts with hydrochloric acid
3. when methane burns in air
Which statements are correct?
A. 1,2
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only

Answer 1

Answer:

I think 1 and 2 only , 1 and 2