Question

(1) The part where an embryo develops
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.(4x1=4 marks)
60
51
50
38
40
25
30
17
20
10
0
1973
2007
1992
2002
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 bodios?
d) Explain how eutrophication impacts aquatic animals.​

Answer 1

Explanation:

Ramveer Tanwar has brought together villagers and revived 10 lakes in Gautam Buddha Nagar, Uttar Pradesh. His awareness programme on conservation to avert the water crisis has now spread across more than 50 villages. In 2018, a report by NITI Aayog stated that India was facing the worst water crisis in its history.