Question

1. why is the arctic particularly affected by feedback loops?

a. lower levels of biodiversity overall
b. higher ice melt rates increase warming
c. stronger ocean currents circulate here
d. decreased sunlight during polar night

Explanation:

To determine why the Arctic is particularly affected by feedback loops, we analyze each option:

• Option a: Biodiversity levels don’t directly relate to feedback loops driving Arctic change.
• Option b: The Arctic has a positive feedback loop: ice melts (due to warming), exposing darker ocean/land, which absorbs more heat, causing more warming and more ice melt. This directly explains the feedback loop impact.
• Option c: Ocean currents’ strength isn’t the primary reason for Arctic feedback loops.
• Option d: Polar night sunlight changes are not a feedback loop driver for Arctic’s unique vulnerability.

Answer:

b. Higher ice melt rates increase warming