How much of the total water is available for humans to use?
Only three percent of the total water on earth is freshwater
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15
Say two uses of water for the living things.
Component of the body, of the blood, part of plants' cells, habitat, liquid protecting the embryos, etc.
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15
What is the greenhouse effect?
This effect makes the earth retain heat from the sun in its atmosphere. This causes the earth to have a temperature of about 15ยบC. Weather stability for life.
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15
Describe the hydrosphere
The hydrosphere consists of all the water on earth: oceans, rivers, lakes, glaciers, polar ice caps and the small drops of water in the atmosphere.
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15
The ozone layer protects us from what?
The ozone layer of the atmosphere protects the planet from the sun's ultraviolet rays.
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gift
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15
What are the three zones of the Biosphere?
The lithosphere, atmosphere and hydrosphere
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lifesaver
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lifesaver
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15
How do humans use soil?
For agriculture and forestry.
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What can we get from petroleum?
Fuels, colorants, cosmetics, medicine, etc.
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What does the biosphere include?
It includes all living things and the outer layers of the earth.
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Say two uses of water at industry.
To process food, to create clothes, to create energy, etc.
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shark
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rocket
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15
What properties does the soil have?
It has many minerals as well as organic matter and air.