Tag: first aid

Water shortage is the water scarcity that may be caused by altered weather patterns including droughts or floods, increased pollution, and increased human demand and overuse of freshwater. Sea water cannot be used for daily activities because of the salt content. Thus, the correct answer is option D.

The Oceans hold about 97% of water, and the Glaciers and polar ice caps hold another 2%. The polar ice caps contain 77% of the world's fresh water supply and another 22% is trapped in the ground which leaves only 3% of the world’s fresh water supply in lakes and rivers.

The hydrological cycle is a prominent method to rejuvenate the fresh water resources. It involves the evaporation of water into water vapour by the heat of the sun which further condenses into tiny water droplets which fall on the earth as rain. This continuous recycling of water leads to recharging of the water resources. 

Transpiration in plants plays a vital role in the water cycle. The plants transpire and lose water in the form of gases from its aerial parts which increases the moisture content in the atmospheric air. So, the air gets saturated with moisture at a faster rate and causes rainfall. Thus, the correct answer is option B.

The hydrological cycle is a prominent method to rejuvenate the fresh water resources. It involves the evaporation of water into water vapour by the heat of the sun which further condenses into tiny water droplets which fall on earth as rain. Thus, the process like evaporation and condensation and precipitation plays an important role.

• The hydrological cycle is a prominent method to rejuvenate the freshwater resources. 
• It involves the evaporation of water into water vapor by the heat of the sun which further condenses into tiny water droplets that fall on the earth as rain.
• This continuous recycling of water leads to the recharging of water resources. 
• The solar radiation plays an important role in the water cycle.
  
  Hence, option D is correct.

• The global water cycle describes the water movement globally. It is a complex pathway that includes the passage of water from the gaseous envelope around the planet called the atmosphere, through the bodies of water on the surface of the earth such as the oceans, glaciers, and lakes, and at the same time passing through the soil and rock layers underground. 
• Later, the water is returned to the atmosphere. A fundamental characteristic of the hydrologic cycle is that it has no beginning and it has no end. It can be studied by starting at any of the following processes: evaporation, condensation, precipitation, interception, infiltration, percolation, transpiration, runoff, and storage.