Which of the following events took place in the Cenozoic era?
Options: Formation of the rockies, India collides with Asia and the formation of the Himalayas and the Alps, Formation of the Appalachians and central European mountains, Splitting of India from Antarctic, Breaking up of Pangaea
Options: very cold wind, which blows down from the plateau of central France, swift, dry, cold northerly wind that blows down from the western Alps and the plateau of Southern France and out over the Mediterranean, wind that blows for 100 days a year and may cause extensive frost damage to plants, All of the above
Options: the intensity of light emitted by them changes with time, the distance of the stars from the earth changes with time, the refractive index of the different layers of the earth's atmosphere changes continuously, consequently the position of the image of a start changes with time, the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere
Which of the following factors are responsible for the rapid growth of sugar production in south India as compared to north India?Higher per acre field of sugarcaneHigher sucrose content of sugarcaneLower labour costLonger crushing period
Options: I and II, I, II and III, I, III and IV, I, II and IV
Exposure to sunlight helps a person improve his health because
Options: the infrared light kills bacteria in the body, resistance power increases, the pigment cells in the skin get stimulated and produce a healthy tan, the ultraviolet rays convert skin oil into Vitamin D