EVERYDAY SCIENCE

Detailed explanation-1: -Ice–albedo feedback is a positive feedback climate process where a change in the area of ice caps, glaciers, and sea ice alters the albedo and surface temperature of a planet.

Detailed explanation-2: -Observations and modelling studies indicate that there is a net positive feedback to warming. Large positive feedbacks can lead to tipping points-abrupt or irreversible changes in the climate system-depending upon the rate and magnitude of the climate change.

Detailed explanation-3: -This whole sequence is an example of a positive feedback loop-global warming is melting ice, thus reinforcing global warming, which amplifies ice loss.

Detailed explanation-4: -A positive feedback accelerates a temperature rise, whereas a negative feedback slows it down. One example of a positive – and dangerous – feedback loop is this, from the Arctic: if the frozen permafrost layer warms and releases heat-trapping gases as a byproduct, the gases can warm the atmosphere.

Detailed explanation-5: -The ice-albedo feedback is an example of a positive feedback loop. A feedback loop is a cycle within a system that increases (positive) or decreases (negative) the effects on that system.