Earth's Fresh water and Salt Water

Why are we not able to drink the majority of the water on our planet? 

(a)  

What do scientists call water that humans can use for drinking or for crops? 

• drinking water

• freshwater

• salt water

• water

What percentage of the water on Earth is salt water?

• 97%

• 71%

• 3%

• 50%

Which information is supported by the information in the bar graph?

• most surface water is in lakes

• The oceans contain all of Earth's water

• Rivers contain more water than swamps do

• The water in glaciers is considered ground water