1. What is Eutrophication?
2. Eutrophication is caused by
a. Sewage water discharge
b. Runoff from agricultural land
3. Eutrophication results in
a. Algal blooms
b. Hypoxia and dead zones
c. Killing of fish
4. To reclaim salinized lands the following added
a. Lime
b. Gypsum
c. Nitrogen
d. Water
5. Which of the following results in soil erosion and why
a. Deforestation
b. Over grazing
c. Shifting cultivation
1.Eutrophication is the abundance of nutrients in the aquatic system.(too much is too bad).
ReplyDelete2.both a and b.
3.All
5.All
4.c&d
ReplyDeleteto reclaim salinized lands = Gypsum (imp bit)
Deleteacidic lands= lime
All the questions posted here are though provoking. Thinking a lot, rather than reading is imp for clearing prelims. If you analyze all previous year question they are very simple but deep, which requires considerable thinking. So always please ask why?
DeleteFor example answer the following questions
1. Deforestation, overgrazing results in soil erosion why?
2. Eutrophication results in Algal blooms, Hypoxia, dead zones and Killing of fish why?
let me reiterate what I have mentioned earlier. Tomorrow in the UPSC eaxm you are going to find questions from this blog (In one way or other). I vouch for it. So please keep thinking about these questions.