Answer:
The three most important sources of environmental problems are 1) market failure, 2) the tragedy of the commons, and 3) the underprovisioning of public goods
Explanation:
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Answer:
through the break down of macromolecules
<span>Catabolism is all of the chemical reactions that break down molecules, either to extract energy or to produce simple molecules for constructing others. Anabolism refers to all of the metabolic reactions that build or assemble more complex molecules from simpler ones.</span>
Only B. illustrates a positive feedback mechanism. A. demonstrates a negative feedback mechanism, while C. demonstrates no feedback mechanism at all.
