Question

5. The following data shows the number of water bodies in Bengaluru city from 1973
to 2007. Observe the data and answer the following questions: (4*1 = 4 marks)
60
51
50
38
40
30
25
17
20
2002
1992
2007
1973
Number of water bodies
Source: Indian Institute of Science
a) Explain the trend in the number of water bodies from 1973 to 2007.
b) What could be the possible reason behind this trend?
c) Many water bodies in cities like Bengaluru are eutrophied due to algal growth. What
causes alga to grow so rapidly in water bodies?
d) Explain how eutrophication impacts aquatic animals.
mination:
(4 marks)​

Answer 1

Answer:

A map gives the location of the village and the approach rate to it. It serve as a guide for materials sources of revenue for revenue collectors- boundary of farm for farmers and boundary of village for administratots. it means something very small. Kritam was probably the tiniest of the seven hundred thousand villages in the India as it was a microscopic dot on the survey map.

Answer 2

Answer:

These are strong disinfectant chemical substances which are applied on spots where germs thrice and multiply.