The cultural and aesthetic value of a forest to indigenous people represents its
A) cultural service.
B) regulating service.
C) supporting service.
D) provisioning service.
Question 2
Which of the following represents an alarming positive feedback loop of global warming?
A) Increasing temperatures raise humidity, which further increases temperatures.
B) Decreased pH of the ocean increases the rate at which carbon dioxide is absorbed by the oceans from the atmosphere.
C) Increased use of fossil fuels adds ozone to the stratosphere, which traps more heat.
D) Increased levels of atmospheric carbon dioxide decreases photosynthesis, which further increases atmospheric levels of carbon dioxide.
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