Last seen: Mar 10, 2022
Correct answer: (a) To reduce the emission of sulphur dioxide in exhaust fumes. Explanation: To reduce the emission of sulphur dioxide in exhaust ...
Correct answer: (a) Carbon dioxide and water Explanation: Catalytic converters are fitted into automobiles for reducing emission of poisonous gase...
Correct answer: (b) Transport system Explanation: The major source of noise pollution, worldwide is due to transport system.
Correct answer: (d) 80 dB Explanation: Green muffler is related to pollution of noise. Noise pollution is measured in decibels (dB). Intensity lev...
Correct answer: (d) Both (a) and (c) Explanation: The green scum seen in the fresh water bodies is due to blue green algae and green algae.
Correct answer: (a) Burning coal Explanation: Burning coal causes more indoor chemical pollution.
Correct answer: (c) Dobson units are used to measure oxygen content Explanation: The thickness of ozone is measured in terms of Dobson Units (DU)....
Correct answer: (c) Bone
Correct answer: (a) Dichloro diphenyl trichloroethane Explanation: The expanded form of DDT is dichloro diphenyl trichloroethane.
Correct answer: (d) Both (b) and (c) Explanation: Biomagnification refers to increase in concentration of the toxicant at successive trophic level...
Correct answer: (c) Eichhomia Explanation: The world’s most problematic aquatic weed is water hyacinth (Eichhornia crassipes) also called Terror o...
Correct answer: (b) Methane Explanation: Compressed Natural Gas (CNG) is methane.
Correct answer: (d) Styrofoam Explanation: Styrofoam is a kind of expanded polystyrene used especially for making food containers used for sound p...
Correct answer: (a) 2.50 micrometers Explanation: According to CPCB (Central Pollution Control Board) particulate size 2.5 micrometer or less in d...
Correct answer: (c) Humans Explanation: Non-biodegradable pollutants are created by humans.
During his pioneering and extensive explorations in the wilderness of South American jungles, the great German naturalist and geographer Alexander von...
Paul Ehrlich proposed Rivet popper hypothesis to show the effect of biodiversity loss on the ecosystem. An airplane (ecosystem) has thousands of rivet...
In general, species diversity decreases as we move away from the equator towards the poles. The possible reason could be as follows: (i) Tempera...
The direct use values where the biodiversity products can be harvested and consumed directly are called consumptive use value of biodiversity, humans ...
The products of ecosystem processes are named as ecosystem services, for example, healthy forest ecosystems purify air and water, mitigate droughts an...