Question

which processes are responsible for the formation of glaciers?
○ impact and deflation
○ plucking and abrasion
○ deposition and erosion
○ accumulation and compaction

Explanation:

To determine the processes for glacier formation, we analyze each option:

• "Impact and deflation": Impact is not a key glacier - forming process, and deflation is related to wind erosion, not glacier formation.
• "Plucking and abrasion": These are processes by which glaciers erode the land, not form.
• "Deposition and erosion": Erosion is about wearing down, and deposition is about laying down materials; they don't form glaciers.
• "Accumulation and compaction": Glaciers form when snow accumulates over time and is compacted into ice. So this is the correct process.

Answer:

D. accumulation and compaction