Final answer:
The differences in composition over time in magma evolution include crystal settling, rock metamorphism, and soil formation.
Step-by-step explanation:
The correct options for the differences in composition over time in magma evolution are:
- Crystal settling: This occurs when crystals of different minerals sink to the bottom of a magma chamber due to their different densities.
- Rock metamorphism: This process involves the alteration of pre-existing rocks through heat and pressure, resulting in the formation of new minerals and textures.
- Soil formation: Over time, weathering breaks down rocks into smaller particles, which mix with organic matter to form soil.
Mineral erosion is not directly related to magma evolution and is more commonly associated with the erosion of rocks on the Earth's surface.