Scientists Have Started to Record What Happens to Areas in the Amazon

question 21

Multiple Choice

Scientists have started to record what happens to areas in the Amazon that have been burned.They are recording which plants grow back and how water and carbon cycles are affected by the new growth.They are also performing experiments to look for ways to encourage the return of rainforest.This work is significant because if the burned rainforests do not recover,

• A) water and carbon cycles will be disrupted.
• B) they will absorb more carbon than they release.
• C) they will become carbon sinks.
• D) a primary source of food for most of the world's population will be lost.

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Definitions:

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The present value of future profits, accounting for the time value of money and diminishing returns over time.