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.
1 Eddie Ray Routh is a suspect in the shooting and killing of former Navy SEAL Sniper Chris Kyle. 2  The motive for Kyle's shooting was not immediately known. 3  Chris Kyle yle served in the Navy from 1999 to 2009 and was deployed to Iraq four times, killing scores thanks to his eagle eyesight and steady trigger finger.