Which of the following is an example of biodegradable waste?

Write two methods of waste disposal.

The greenhouse effect is caused by an increase in the concentration of which gas in the atmosphere?

What are the advantages of cloth bags over plastic bags during shopping?

Where are coliform bacteria found in human beings?

In a village in Karnataka,people started cultivating crops all around a lake which was always filled with water. They added fertilisers to their fields in order to enhance the yield. Soon they discovered that the waterbody was completely covered with green floating plants and fishes started dying in large numbers. Analyse the situation and give reasons for the excessive growth of plants and the death of fish in the lake.