Explain how at least two of Earth’s systems interact to form soil.

1. spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). ... Interactions also occur among the spheres; for example, a change in the atmosphere can cause a change in the hydrosphere, and vice versa. 2. Although soil only accounts for about 10% of Earth's surface, it is a precious natural resource that deeply affects every other part of the ecosystem. Soils hold nutrients and water for plants and animals, filter and cleanse water, and affect the amount of water that returns to the atmosphere to form rain. 3. The atmosphere brings back rainwater to the hydrosphere. ... The atmosphere provides the geosphere with heat and energy needed for rock breakdown and erosion. The geosphere, in turn, reflects the sun's energy back into the atmosphere. The biosphere receives gases, heat, and sunlight (energy) from the atmosphere.

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c.

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