Answer:
C. evolutionary theories.
Explanation:
According to revolutionary theories, organisms have the tendency to passed on the better genes to the next offspring. So over time, those organisms will be evolved into a more advanced version of themselves.
This theory can be used to observe our society.
Humans used to live very primitively. Our activities are limited to hunting and gathering food. But as we goes forward, their offspring keep getting smarter and smarter. This enable them to develop a more complex way to survive , They utilize technological invention to make their life better. This is why society keep changing to a more complex form.
A delta is a body of sediment deposited at the mouth of the river or stream where it enters an ocean or lake. Water, or flood in this case, wouldn't tear it down, but it instead builds up the delta. Periods of drought however, have the opposite effect.
Answer:
The airlines base the policy on the assumption that the consumer demand is less elastic as time of departure approaches.
Explanation:
Price Elasticity of Demand refers to price sensitivity; i.e. the rate at price changes with demand.
As the purchase and flight departure gets smaller, the arrival rate of the passengers will definitely change.
When the demand of a commodity is less elastic, then it will cause a large changes in price of that commodity to effect a change in quantity consumed.