The Khyber Pass: The chief mountain pass between Pakistan and Afghanistan, west of Peshawar. 33 miles (53 kilometers) long; 6,825 feet (2,080 meters) high.
The Bolan Pass: The pass is an 89-km (55-mi) stretch of the Bolan River valley from Rindli in the south to Darwāza near Kolpur in the north. It is made up of a number of narrow gorges and stretches.
the greatest environmental impact is increased greenhouse gases.
Explanation:
The fossil fuel are those elements that release tonnes of carbon dioxide on burning and they lead to the creation of greenhouse gas effect that creates problems for the increasing carbon content and since carbon absorbs much of the solar energy it raised the temperature of the earth and creates visible pollution on land, and water.
