Greenhouse gases are the cause of Greenhouse effect.The greenhouse gases which include CO2, Methane etc. trap the heat in the Earth's atmosphere and don't allow it to escape.
The weapon is fitted with a Leupold Mark 4. The rifle is also similar in appearance to the TAC-338 rifle that Kyle used in real life. McMillan TAC-338A sniper rifle with Harris bipod, Leupold Mark 4 scope, and AN/PVS-22 Universal Night Sight - .338 Lapua Magnum. Kyle taking aim with the rifle. Right side of the rifle.
Prosecutors: Chris Kyle, Chad Littlefield shot in the back. Dashcam footage was shown of the arrest of suspect Eddie Ray Routh. American Sniper Chris Kyle's widow watched as prosecutors showed photos of the crime scene and talked about how many times the men were shot.