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Environmental Issues
Question
A lake with nutrients is called
trophic
euphotic
oligotrophic
eutrophic
Solution
D.
eutrophic
Eutrophication is the process in which lakes receive nutrients such as phosphorus and nitrogen and sediment from the surrounding watershed and become more fertile and shallow.
Trophic level is the group of organisms within an ecosystem which occupy the same level in a food chain.
Euphotic zone or the sunlight zone is the uppermost layer of the ocean or lake exposed to intense sunlight.
Oligotrophic lake is a lake with low primary productivity due to low nutrient content. Also, they have low algal production.
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Some More Questions From Environmental Issues Chapter
Smog is a mixture of :
WHO’s recommendations about the industrial noise limit is of :
Which of the atmospheric layer contains ozone layer ?
The amount of dissolved oxygen required by the microorganisms to degrade the organic wastes present in water is called ?
The cause of acid rain is :
Which one of the following causes ozone depletion ?
What disease is caused due to consumption of fishes captured from water contaminated with mercury ?
Which one of the following is not a green-house gas ?
Which gas contributes the maximum in global warming ?
Fill in the blanks with suitable words :
1. Increase in concentration of soluble salts in the soil is called.........
2. Aforestation can check the advancement of......... .
3. DDT is a serious pollutant as it is a.........pollutant and undergoes......... .
4 .........plant has become a troublesome weed in agricultural fields.
5 .........are major aerosol pollutant present in jet aircraft emission.
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