Environmental Science MCQ Questions and answers | EVS MCQ

The areas where soil is washed away into streams, transported into rivers and finally lost to the sea are called ecologically sensitive areas.

A crevasse is a deep crack, or fracture, found in an ice sheet or glacier, as opposed to a crevice that forms in rock.

Nitrosomonas convert ammonia into nitrates by a process called nitrification. It is performed in two steps – nitrite formation and nitrate formation.

All of these places.

Temperature is a measure of the average speed of all of the molecules in a substance (gas, liquid, or solid). The higher the air temperature, the faster the air molecules move.

Temperature determine the kind (wavelength) and amount of radiation that an object emits.

An ecosystem is said to be stable when it's structure and function remains constant for a long period of time. Among the given options, most stable ecosystem is ocean. The first reason for its stability is it's chemical composition which includes saline.

Aquatic environments, such as coral reefs, estuaries, swamps and marshes, and terrestrial environments, including tropical rainforests, tropical seasonal forests, temperate evergreen forests, and temperate deciduous forests have the highest levels of primary productivity.

Carbon sequestration describes long-term storage of carbon dioxide or other forms of carbon to either mitigate or defer global warming and avoid dangerous climate change. It has been proposed as a way to slow the atmospheric and marine accumulation of greenhouse gases, which are released by burning fossil fuels.

The reasons are deforestation, pollution, killing, over exploitation etc. The most important among them is deforestation or destruction of their natural habitat because it will affect the species (flora and fauna) of complete area and not only the few organisms.