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Describe how and why some species of nudibranchs use the stinging nematocysts of cnidarians.
Emergency Care
Medical services provided for sudden or urgent health conditions requiring immediate attention.
Marginal Cost
The added expense from making one more unit of a product or service.
Marginal Benefit
The extra advantage or happiness derived from the use of one more unit of a good or service.
Consumption
The use of goods and services by households or individuals, contributing to their utility and the overall demand in an economy.
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