Q21. Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences?
Pollination
Q19. At one of the places in India, if you stand on the seashore and watch the sea, you will find that the sea water recedes from the shoreline a few kilometers
Q17. Consider the following statements: With reference to the Constitution of India, the Directive Principles of State Policy constitutes limitations upon