Environmental Science - Study Mode

[#236] Climate includes
Correct Answer

(D) All of these

Explanation

Solution: Climate change is any systematic change in the long-term statistics of climate variables such as temperature, precipitation, pressure, or wind sustained over several decades or longer.

[#237] An example of nitrogen fixing bacteria in the soil
Correct Answer

(C) Azotobacter

Explanation

Solution: Azotobacter is a genus of usually motile, oval or spherical bacteria that form thick-walled cysts and may produce large quantities of capsular slime. They are aerobic, free-living soil microbes which play an important role in the nitrogen cycle in nature, binding atmospheric nitrogen, which is inaccessible to plants, and releasing it in the form of ammonium ions into the soil (nitrogen fixation).

[#238] In a food chain of grassland ecosystem the top consumers are
Correct Answer

(B) Carnivorous

Explanation

Solution: The main reason why in a food chain of the grassland ecosystem, the top consumers are carnivorous because they are not eaten by others.

[#239] The algal booin often releases __________ in water
Correct Answer

(B) toxins

Explanation

Solution: A harmful algal bloom (HAB) contains organisms that can severely lower oxygen levels in natural waters, killing marine life. Some HABs are associated with algae-produced toxins.

[#240] The first protected area in India is ____________
Correct Answer

(B) Corbett National Park

Explanation

Solution: The first wildlife reserve of India, Jim Corbett National Park or 'Corbett Tiger Reserve' is situated in the Nainital district of Uttarakhand. It covers 1318 sq km of area, in which 500 sq. km is the core area and rest part is the buffer zone.