知识世界

Environment:Water Supply in Canada

Water is all around us, covering 80 % of the Earth's surface. 97% of the water on earth is salt water, and 2% is trapped in the polar ice caps and glaciers, leaving only 1% of all the water on earth available as fresh water. It's in the soil feeding the plants. Canadians are the world's second largest users of water in the world. The average daily domestic water use per person is 350 litres.

• 01

  Environment： The Infinite Voyage —— Crisis in the Atmosphere

  
• 02

  Environment： Thirsty Planet（1）

  
• 03

  Environment： Waves in the Ocean

  
• 04

  Environment： Ice Worlds: Life at the Edge

  
• 05

  Environment： Something in the Air

  
• 06

  Environment： Building Blocks

  
• 07

  Environment： The Pond - Community Ecology in Action

  
• 08

  Environment： The Endless Voyage — Survivors

  
• 09

  Environment： The Nature of Things——The Living City

  
• 10

  Environment： It's in the Water