Consider the possible scenarios and determine which of them are true for positive feedbacks or negative feedbacks. a. increased plant photosynthesis resulting from a temperature rise can remove carbon dioxide from the atmosphere which can potentially lead to positive feedback. b. increased evaporation resulting from a temperature rise can produce more clouds which can potentially lead to a negative feedback. c. increased plant photosynthesis resulting from a temperature rise can remove carbon dioxide from the atmosphere which can potentially lead to a negative feedback. d. increased evaporation resulting from a temperature rise can produce more clouds which can potentially lead to a positive feedback. e. if ice cover melts due to a temperature rise the result will be decreased albedo or reflectivity which can potentially lead to a negative feedback. f. if ice cover melts due to a temperature rise the result will be decreased albedo or reflectivity which can potentially lead to a positive

Scenario A, B and E is True.

Explanation:

Scenario A) True. Removing carbon dioxide from atmosphere decreases greenhouse effect of atmosphere. Thus, temperature rise decreases.

Scenario B) True. The more evaporation creates the more greenhouse effect. Therefore, temperature rise increases.

Scenario C) False. Removing carbon dioxide from atmosphere decreases greenhouse effect of atmosphere. Thus, temperature rise decreases.

Scenario D) False. The more evaporation creates the more greenhouse effect. Therefore, temperature rise increases.

Scenario E) True. If reflected radiation increases from Earth, temperature rise of the Earth will decrease. Ice cover increases reflectivity which leads temperature level decrease.

Scenario F) False. If reflected radiation increases from Earth, temperature rise of the Earth will decrease. Ice cover increases reflectivity which leads temperature level decrease.

1 a

2 b

3 b

4 d

5 d

6 d

explanation:

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