UPSC Civil Services Model Paper 2

Remote sensing satellite:
● It takes imagery of the earth.
● Green area is generally considered as either forests or plantations. So, it is possible to forecast crop production.
● Using imagery information, it is possible to remotely assess an area for landslides. So, statement 1 is correct.
● If patches of green are seen amidst huge bodies of water , that signals presence of phytoplankton (Aquatic Productivity). So, statement 2 is correct.
● It can also be used for finding suitable location for infrastructure projects. So, statement 3 is correct.
● If the image is white , it may be interpreted as ice. So, statement 4 is correct.