10 Questions
What percentage of water makes up the human brain?
85%
How much water should people in hot desert climates drink per day?
Up to 10 quarts
What distinguishes Earth from other bodies in the solar system?
Abundance of liquid water on the surface
How much of Earth's surface is covered by oceans?
70%
What volume of water is there on the planet Earth?
1.4 billion cubic kilometers
What percentage of water makes up human babies?
75%
How much water should people in hot desert climates drink per day?
Up to 10 quarts
What percentage of water makes up the human brain?
85%
How long can humans live without water?
Less than a week
What distinguishes Earth from other bodies in the solar system?
Abundance of liquid water
Study Notes
Water Composition
- The human brain is composed of approximately 75-80% water.
- Human babies are made up of around 90% water.
Daily Water Intake
- People in hot desert climates should drink at least 2-3 liters (67.6-101.4 oz) of water per day.
Earth's Characteristics
- Earth is unique among other bodies in the solar system because it has a significant amount of liquid water on its surface.
Water Coverage on Earth
- Oceans cover approximately 71% of the Earth's surface.
Global Water Volume
- The total volume of water on Earth is around 1.386 billion cubic kilometers (km³).
Human Survival
- Humans can survive without water for around 3-5 days, depending on the environment and individual factors.
Test your knowledge of the water cycle and fresh water supply in environmental biology with this quiz. Explore key concepts such as precipitation, evaporation, and water conservation while assessing your understanding of essential natural resources.
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