Mexico is south of the US and speaks Spanish
Niger and Congo are two rivers after which countries are named (actually in both cases two countries each) - and those are African countries, so they must be in Africa.
Zambezi is a river in Angola and Namibia.
Tigris is a River in Mesopotamia, in Asia - so that's the correct answer!
Explanation:
Carbon dioxide and methane are called greenhouse gases. The property of greenhouse gases is they they heat energy in them and does not let it escape.
Both Carbon dioxide and methane when present in atmosphere, absorb heat from sun and heat which would is reflected from the Earth's surface. With increase in fuel consumption release of these gases has grown tremandously. Thus, with increase in Carbon dioxide and methane more and more heat is being trapped in the atmosphere and therefore, the Earth's average is rising decade after decade.
Cambodia is located in the southern portion of the Indochina Peninsula.
~Happy Studying!
