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Question 12 (1 point) Choose whether the phenomenon below is a positive or negative feedback loop. 1. Temperature increases in the atmosphere 2. Temperature can cause growth conditions to change. 3. Areas which trees grow will extend north to high latitudes 4. New trees in new areas will absorb carbon dioxide 5. Carbon dioxide concen in atmosphere decrease Oa negative Ob positive Question 13 (1 point) Choose whether the phenomenon below is a positive or negative feedback loop. Humans establish a civilization and need environment resources to survive Humans use resources and increase in their population size Population growth exceeds resources available Population declines due to fewer recourses Resources can then recover due to decreased human activity ee Be a a, \\_! a positive Ob negative