Final answer:
Positive and negative feedback mechanisms explained with examples and comparison.
Explanation:
Positive feedback: Melting sea ice leads to warmer water and more melting. This is because as the ice melts, exposing more water, the water absorbs more heat, causing further melting.
Negative feedback: Increasing cost of gasoline leads to driving fewer miles. As the cost rises, people tend to drive less to save money, which decreases the overall miles driven.
Comparing positive and negative feedback: Positive feedback amplifies the original change, leading to an increase in the process, while negative feedback dampens the original change, maintaining or returning the system towards equilibrium.
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