Multiple Choice
Which statement accurately describes the potential effects of disturbance on species diversity?
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48. Ecology
Introduction to Ecology
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In the context of a glacial budget, what happens if accumulation exceeds ablation?
A
The glacier will melt completely.
B
The glacier will advance.
C
The glacier will retreat.
D
The glacier will remain stationary.
Verified step by step guidance1
Understand the terms 'accumulation' and 'ablation': Accumulation refers to the addition of snow and ice to a glacier, while ablation refers to the loss of ice and snow through melting, sublimation, or calving.
Recognize the concept of a glacial budget: A glacier's behavior depends on the balance between accumulation and ablation. If accumulation exceeds ablation, the glacier gains mass.
Analyze the impact of increased accumulation: When a glacier gains mass due to higher accumulation, it typically grows in size and volume.
Understand the movement of the glacier: As the glacier grows, it exerts more pressure on the underlying surface, causing it to advance forward into new areas.
Conclude the relationship: If accumulation exceeds ablation, the glacier will advance, as the net gain in ice and snow pushes the glacier forward.
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