Atmosphere
Air zone covering the Earth’s surface.
Biosphere
Life zone consists of a variety of life such as humans, animals, plants and microorganisms
Hydrosphere
Water zone that includesrivers, lakes, seas and also water trapped as ice, underground waterand water vapour in the atmosphere.
Geosphere
Rock and soil zone on the Earth’s surface.
Atmospheric Stratification
Earth’s atmosphere consists of five layers:
Exosphere
Thermosphere
Mesophere
Stratosphere
Troposphere
Example of question:
What do you feel when you climbing a mountain?
Explain your answer.
Answer:
The weather is cold and have difficulties in breathing.
It is because from troposphere to stratosphere, the altitude increases.
The higher the altitude, the lower the air pressure.
Ocean Stratification
Surface
The water is very shallow and light can penetrate.
This makes the zone suitable as a habitat for plants.
Midnight
This zone has little or no light.
It is difficult for plants to live at this depth but this level of depth becomes the habitat for large marine animals, such as giant squids and various species of whales.
Dark
This zone is very deep and no light can reach it.
Therefore, most animals in this zone have shimmering bodies or are able to glow in the dark.
Source: Textbook Science Form 3
Characteristics of Earth that makes it suitable for all life:
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