Answer:
D hydrosphere
Explanation:
Soil erosion is the removal of the top soil layer. Soil erosion is controlled by precipitation (e.g. rainfall) and wind action. Continuous water flow on soil surface supports microorganisms to perform biogeochemical cycles. The phenonmenon is primarlity controlled governed at the iterface of geosphere (soil) and hydrosphere (water).
On the other hand, atmosphere (layers of gases), biosphere (living organisms), cryosphere (frozen water) are not directly related to soil erosion.
Answer:
When a solid is heated the particles gain energy and start to vibrate faster and faster. Further heating provides more energy until the particles start to break free of the structure. Although the particles are still loosely connected they are able to move around. At this point the solid is melting to form a liquid.
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B. Harder for a cell to move materials in and out of a cell
