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Protists can be heterotrophs.
Common Resource
A resource like air or water that is not owned by anyone, but can be used freely by the public, often leading to overuse and depletion.
Socially Optimal
A condition or point at which the benefit to society is maximized, often considered in economic contexts to represent the most efficient allocation of resources.
Cost-Benefit Analysis
An estimate of the costs and benefits of providing a good. When governments use cost-benefit analysis, they estimate the social costs and social benefits of providing a public good.
Marginal Social Benefits
The additional benefit to society as a whole from producing or consuming one more unit of a good or service.
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