Environmental Science - Study Mode

[#451] The term "Biocoenosis" was proposed by
Correct Answer

(B) Carl Mobius

Explanation

Solution: A biocenosis (UK English, biocoenosis, also biocenose, biocoenose, biotic community, biological community, ecological community, life assemblage,) coined by Karl Möbius in 1877, describes the interacting organisms living together in a habitat (biotope).

[#452] The best way to check soil erosion is by providing adequate trees and
Correct Answer

(A) Grass cover

Explanation

Solution: The best way to check soil erosion is by providing adequate trees and grass cover.

[#453] _________ is a mixture of 50 - 90% of methane
Correct Answer

(A) Natural gas

Explanation

Solution: Methane also is the chief constituent of natural gas, which contains from 50 to 90 percent methane (depending on the source), and occurs as a component of firedamp (flammable gas) along coal seams.

[#454] The source of atmospheric oxygen is
Correct Answer

(B) Green Plants

Explanation

Solution: The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water. Hence, answer B is correct.

[#455] Which of the following type of pollution can cause the outbreak of jaundice
Correct Answer

(C) Water

Explanation

Solution: Water pollution can cause the outbreak of jaundice. Jaundice is caused by the organism Seriola quinqueradiata. The disease is characterised by yellow colorations of the skin, these yellow colourations are majorly due to the build-up of bilirubin in the blood.