Question

The global atmospheric concentration of carbon dioxide has increased in the last 200 years. What could be causing this increase

1. emissions from motor vehicles
2. photosynthesis
3. power stations using coal and oil
SELECT ONE
1 and 2 only

1 and 3 only

2 and 3 only

1, 2, and 3

Answer 1

Answer:

Answer B)1 and 3

Explanation:

emissions from motor vehicles and power stations using coal and oil produce co2 in large amounts

Answer 2

Answer:

1 and 3 only

hope the answer helps