An important example of a "positive feedback loop" in the polar climate system is: a. Scientists in remote places check on each others instruments.

b. Warming ocean water opens new areas for marine species.

c. Warmer winters cause more plant growth, providing more food.

d. Sea ice melt opens more ocean to sunlight, causing more melt.

The significant example of a positive feedback loop in the climate system i.e. polar should be at the time when the ice of the sea should be melt that there should be more ocean that results in more melting.

The following information related to the positive feedback loop is:

Therefore we can conclude that option d is correct.

All other options seem incorrect.

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 D

Explanation:

A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction.

In choice D melting of sea ice opens more ocean to sunlight which causes more ice to melt which demonstrated a positive feedback loop.

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