Answer
Example of positive feedback mechanism: Melting Arctic Ice - As the Arctic ice melts due to global warming, the ice cover decreases. With less ice, the Earth's surface becomes less reflective, allowing it to absorb more sunlight. This additional absorption of solar radiation further warms the Arctic region, leading to more ice melting. This positive feedback loop accelerates Arctic ice loss and contributes to global warming.
Example of negative feedback mechanism: Thermostat Control - A classic example of negative feedback is the thermostat control in a room. When the room temperature rises above the set point, the thermostat activates the air conditioner, cooling the room. As the room temperature reaches the desired level, the air conditioner turns off, preventing excessive cooling. The thermostat's action stabilizes the room temperature around the desired set point.
Work Step by Step
Refer to the answer above.
