Figure 1 shows the process of carbon capture and storage (CCS) that can be used to manage climate change. Carbon dioxide ( ) is pumped into three different underground locations, where it is stored.
Flow 1 pumps into an underground saline reservoir.
Flow 2 pumps into an oil reservoir; replaces oil; oil is produced.
Flow 3 pumps into a coal seam; replaces methane ; methane is produced.

Figure 1: Carbon capture and storage flow chart
Outline the evidence that acts as a greenhouse gas.
State a greenhouse gas other than .


