3. Mention the distribution of water in the Northern and Southern hemispheres
4. Give the literal meaning of four spheres of environment.
5. What is the atmosphere composed of?
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Explanation:
- Explanation:The Northern Hemisphere is the half of Earth that is north of the Equator. ... Its surface is 60.7% water, compared with 80.9% water in the case of the Southern Hemisphere, and it contains 67.3% of Earth's land
- Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air)
- Earth's atmosphere composed of about 78% nitrogen,21% oxygen,0.9% argon, and 0.1% other gases.
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