Question

Go through the following two examples of feedback loops. i. As Earth warms, evaporation increases • Snowfall at high latitudes increases • Icecaps enlarge • More energy is reflected by increased albedo of ice cover • Earth cools • Rates of evaporation fall. ii. As Earth warms, upper layers of permafrost melt, producing water-logged soil above frozen ground • Methane gas is released in anoxic environment• Greenhouse effect is enhanced • Earth warms, melting more permafrost *
2 points

A. Statement i is a negative feedback loop and ii is a positive feedback loop.

B. Statement i is a positive feedback loop and ii is a negative feedback loop.

C. Both statements i and ii are positive feedback loops.

D. Both statements i and ii are negative feedback loops.​

Answer 1

Answer:

A is the right answer Statement i is a negative feedback loop and ii is a positive feedback loop.

Answer 2

Answer:

Go through the following two examples of feedback loops. i. As Earth warms, evaporation increases • Snowfall at high latitudes increases • Icecaps enlarge • More energy is reflected by increased albedo of ice cover • Earth cools • Rates of evaporation fall. ii. As Earth warms, upper layers of permafrost melt, producing water-logged soil above frozen ground • Methane gas is released in anoxic environment• Greenhouse effect is enhanced • Earth warms, melting more permafrost *

2 points

A. Statement i is a negative feedback loop and ii is a positive feedback loop.

B. Statement i is a positive feedback loop and ii is a negative feedback loop.

C. Both statements i and ii are positive feedback loops.

D. Both statements i and ii are negative feedback loops.