K stands for Kharif while R stands for Rabi. Negative values indicate loss/ decline, while positive ones show gain/ rise.
How would crops be affected due to decline in the number of wells ?

K stands for Kharif while R stands for Rabi. Negative values indicate loss/ decline, while positive ones show gain/ rise. Which village do you think is more affected

K stands for Kharif while R stands for Rabi. Negative values indicate loss/ decline, while positive ones show gain/ rise. What do you think 'decline in number of wells' represents ?

K stands for Kharif while R stands for Rabi. Negative values indicate loss/ decline, while positive ones show gain/ rise. If the number of wells is 155 now , what was it 5 years back ?

K stands for Kharif while R stands for Rabi. Negative values indicate loss/ decline, while positive ones show gain/ rise. Compare table 1 and 2 and state what they tell us about the area under irrigation in both the villages ?

Study the following statements and select the incorrect ones. (i) Pyramids of energy can never be inverted, since this would violate the laws of thermodynamics. (ii) Pyramids of standing crop and numbers can be inverted since the number of organisms at a time does not indicate the amount of energy flowing through the system. (iii) There are certain limitations of ecological pyramids such as they do not take into account the same species belonging to two or more trophic levels. (iv) Saprophytes are not given any place in ecological pyramids even though they play a vital role in the ecosystem.

Read the passage People started trapping, posoning and killing sparrow s in large numbers.Several free fire zones were set up for shooting the sparrows. People would beat drums to scare the birds from landing, so the sparrow ere forced to keep glying until they dropped dead from fatigue. Sparrow nests were torn down, egges were broken and nesttling were killed .Non material rewardsand recoginition were offered to school, work uits and gvernment agencies in accrdance with the number of sparrows killed . Later some scientists who cut open the digestive system of deal sparrows found that three- fourth of the contents were of insects harmful for crops adn ony one fourth contained grains. The scientiffic findings showed that sparrow were basically beneficial birds for humans. Rather than being increased, crop yields after the campaign were substantially decreased. What is the loss caused due to the killing of sparrows ?