Earth and Life Science Quarter 1: OUR UNIQUE EARTH

Описание

Earth is a unique planet. It is the only planet capable of sustaining life because of the right combination of elements, molecules and ions that react under the right physical conditions to make up the processes supportive to life. It has an atmosphere that serves as a thermostat that is necessary to regulate its surface temperature. It also contains the right amount of liquid water and oxygen that serve as essential compounds needed in the biological processes such as cellular respiration and photosynthesis. Earth’s scientists describe this planet as a life support system. It is in the perfect location in the solar system. The mechanism of its rotation and revolution are well-synchronized to bring about changes in the weather and climate. Its tilt relative to the orbital plane promotes seasons as we know it.

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