occurs when an entire species cannot adapt to a long-term environmental change. A population that cannot find food after a flood in the environment may in order to survive. Over many generations, the build-up of favorable adaptations in a population may lead to.

well its not not rising unemployment and falling inflation.

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changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .