(own time) Understanding positive feedbacks help explain how cause and effect happen, and underlies a holistic understanding of Earth's systems. Which of the following is a positive feedback on Amazon forest dieback that is evident in observations of Amazon change over the recent past?

Question

(own time)  Understanding positive feedbacks help explain how cause and effect happen, and underlies a holistic understanding of Earth's systems. Which of the following is a positive feedback on Amazon forest dieback that is evident in observations of Amazon change over the recent past?

Answer

Decreased rainfall in the Amazon due to large-scale atmospheric circulation changes, leading to lower tree growth rates

Answer

Increased rainfall in the Amazon due to tree dieback and decomposition, leading to erosion and decreased forested areas

Answer

Less rainfall in the Amazon due to tree growth being stunted, leading to lower tree growth rates

Answer

Decreased steam released into the atmosphere over the Amazon and hence rainfall due to climate warming, leading to increased tree mortality

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(own time) Understanding positive feedbacks help explain how cause and effect h...

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