Environmental Science MCQs

✅ The correct answer is option D.
In space, heat gets transferred by radiation. This is mainly in the infrared band of electromagnetic waves. Earth, gets heated up due to earth’s atmosphere and also due to greenhouse effect.

✅ The correct answer is option A.
A seral community (or sere) is an intermediate stage found in ecological succession in an ecosystem advancing towards its climax community.

✅ The correct answer is option A.
High albedo of clouds, low albedo of water is the set of conditions below best explains why this is so.

✅ The correct answer is option C.
Vavilov centers are regions where a high genetic diversity can be found, representing the natural relatives of domesticated crop plants or animals. These areas are also called the primary areas of domestication. India is a primary center of domestication of Water Buffalo.

✅ The correct answer is option A.
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.

✅ The correct answer is option D.
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 correct answer is option B.
The discovery of the annual depletion of ozone above the Antarctic was first announced in a paper by Joe Farman, Brian Gardiner and Jonathan Shanklin which appeared in Nature in May 1985. Later, NASA scientists re-analyzed their satellite data and found that the whole of the Antarctic was affected.

✅ The correct answer is option C.
BOD stands for Biological Oxygen Demand. It is the amount of dissolved oxygen required by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.

✅ The correct answer is option C.
Addressing a major energy conference organised by the Royal Institute of International Affairs (Chatham House) in central London, he said about two-thirds of the world proven oil reserves are located in the Middle East.

✅ The correct answer is option D.
The northern hemisphere, the general rule for solar panel placement is, solar panels should face true south (and in the southern, true north). Usually this is the best direction because solar panels will receive direct light throughout the day.