Or us, the Sun rises in the East and sets in the West. But at the poles, there are no directions. From the North Pole, whichever way we look it is South, and from the South Pole, whichever way we look, it is North. There is no Sunrise or Sunset at the polar regions as we experience at lower latitudes. The Sun appears above the horizon in Summer and makes a 360° circle in the sky - over a period of 187 days at the North Pole 90° North latitude. And in winter, the Sun is below the horizon for 163 days of darkness and 24 days of semi-darkness when the Sun is just below the horizon. It's not exactly six months of darkness/sunlight at the poles. (<span>In Svalbard, </span>Norway, the northernmost inhabited region of Europe, there is no sunset from approximately 19 April to 23 August, and no sunrise between November 14 and January 29.)<span> Needless to mention, when it is summer in the Northern hemisphere, it is winter in the South</span>
Explanation:The poles receive only indirect light from the Sun, so their climates are is always cold, unlike places closer to the equator which get direct sunlight year-round. The poles also experience days and nights very differently. The tilt of earth’s axis is the reason each pole has continuous periods of daylight and darkness during different season. During summer, the North Pole will experience continuous daylight because the Earth’s axis is tilted toward the sun. At the same time, the South Pole experiences no daylight because it is tilted away from the sun. The amount of light each poles receives is reversed during the winter.
· Irrigation schemes are a necessity in many countries as they supply the countries with sufficient water to produce food to meet their increasing food demand (Fanadzo, 2012).In South Africa, the Vaalharts Irrigation Scheme (VHIS) is a large irrigation scheme utilising water from the Vaal River via numerous gravity fed canals ().The return flow from the VHIS enters the Harts River (via numerous ...
