1) Photosynthesis process when plants take carbon dioxide . 2) Erosion of rocks by water. 3) Formation of lakes . 4) Roots fix plants in the soil . 5) Polar bears that live on ice . 6) Erosion of rocks by air . 7) Duck swimming . 8) Human breathing . 9) Fish live in water . 10) Skiing . 11) Irrigating the plants with water . 12) Weathering occurs due to wind . 13) Bird flying . 14) A person eats chicken . 15) the sport of mountain climbing .

Interaction Between Spheres .

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