Environmental Science MCQs

✅ The correct answer is option B.
When ice turns directly into water vapor without first transitioning into a liquid, it is referred to as “sublimation.” In fact, any solid that turns into a vapor without going through the liquid phase can be said to sublime or “sublimate.”

✅ The correct answer is option D.
All of these

✅ The correct answer is option A.
A relatively cool layer of air, usually adjacent to a ground surface cooled by net loss of radiation, in which the air temperature increases with height.

✅ The correct answer is option D.
The formula of growth rate for population in given time is dN/dt=rN.

✅ The correct answer is option A.
Conduction is the transfer of heat between substances that are in direct contact with each other. The better the conductor, the more rapidly heat will be transferred. Metal is a good conduction of heat. Conduction occurs when a substance is heated, particles will gain more energy, and vibrate more.

✅ The correct answer is option D.
The formation of waterfalls is the most characteristic feature in upper course of a river.

✅ The correct answer is option B.
Enrichment of water body by nutrients like phosphorus and nitrogen is called eutrophication.

✅ The correct answer is option B.
The planet with a strong greenhouse effect, whose surface temperature averages 480oC (900oF) is Venus.

✅ The correct answer is option B.
In the United States, most natural gas is burned as a fuel. In 2012 about 30% of the energy consumed across the nation was obtained from natural gas. It was used to generate electricity, heat buildings, fuel vehicles, heat water, bake foods, power industrial furnaces, and even run air conditioners!

✅ The correct answer is option C.
Euro II standard refers to lowering carbon content in fuel.