The Hydrological Cycle

  • Water evaporates from soil and surface waters and is transpired by vegetation.
  • This water returns to the earth as rainfall. 
  • In addition, water moves from land areas to the ocean as runoff in streams, rivers and groundwater flows. 
  • Humans influence the hydrological cycle in many ways. 
  • For instance, humans divert runoff, decrease the amount of water held in soil by destroying natural vegetation, increase rainfall via air pollution, and pollute water.

Comments

Post a Comment

Popular posts from this blog

Process of Water Supply to Our Homes

Image
The water we use in our homes is rainwater from reservoirs, wells or rivers. Before this water can be pumped to our homes, it must be cleaned at the waterworks. First, particles of sand, mud and grit sink and settle in a tank and then the water passes to filter beds where any remaining dirt and some of the bacteria are
Read more

Overfishing- Threat to Marine Life

Image
For hundreds of years, fishermen have been overfishing one fish population after another. The Food and Agriculture Organisation of the United Nations (FAO) recently estimated that of 17 major world fisheries, 13 were either being fished to their limit or were over fished. When a fish population
Read more

Some definitions of Global Warming

Image
With Global Warming making headlines every now and then, here`s giving you some interesting definitions of global warming.............. Global Warming: continuing increase in the average temperature of the air and the oceans.                                If we cannot reverse global warming, how long we run out of party ice? Global Warming: The thing that you blame all of your problems on.                                  Teacher:Why didn`t you do your biology assignment last night?                                 Student: Global Warming                                                       ...
Read more