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Monarch butterflies are protected from birds and other predators but the cardiac glycosides they incorporate into their tissues are from eating milkweed when they were in their caterpillar stage of development. The wings of a different species of butterfly, the Viceroy, look nearly identical to the Monarch so predators that have learned not to eat the bad-tasting Monarch avoid Viceroys as well. This example best describes
Savings
The portion of income that is not spent on current expenditures and is set aside for future use, often in a bank or investment.
Aggregate Demand
The comprehensive call for goods and services within an economic setting, set at a particular total price level for a given temporal duration.
Aggregate Supply
Refers to the total quantity of goods and services that producers in an economy are willing and able to supply at a given overall price level in a given period.
Depression
A severe and prolonged downturn in economic activity, characterized by significant declines in income, employment, production, and retail sales.
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