History Of Life On Earth worksheets
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According to the pie chart, where is MOST of the freshwater on Earth located?
lakes
groundwater
river systems
frozen as ice
Earth's water is mostly
saline
freshwater
fresh groundwater
fresh surface water
Which of the following is not a source of water on Earth?
in the ground
in technology
in living things
in the atmosphere
Most of the Earth’s water is found in
glaciers.
lakes.
oceans.
rivers.
Humans use water MAINLY for which of the following?
brushing teeth
using the restroom
agriculture
bathing
About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much freshwater unavailable for human use?
It is frozen.
It is polluted.
It is salt water.
It is in aquifers.
What percent of the earth is covered by water?
20%
50%
70%
85%
Where is most of the Earth’s freshwater located?
in lakes
in aquifers
in oceans
in glaciers
This table shows sizes of Earth's oceans. Based on this table and the makeup of Earth's total water, which reasonable conclusion can be made?
Earth's seas contain more salt water than the oceans.
Earth's land has more surface area than Earth's oceans.
Earth's largest source of salt water is the Pacific Ocean.
The Pacific Ocean is larger than all other oceans combined.
97.5% of all the water on Earth is salt water. Fresh water is distributed on Earth as seen in the bar graph above. What can we say about MOST of the freshwater on Earth?
Most of the water is easy to find and use.
We cannot use most of it because it is frozen.
Most of the freshwater is home to animals and plants.
We must drill wells to use it because it is underground.
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