The Membrane-Filtration Method of Desalination

question 21

Multiple Choice

The membrane-filtration method of desalination

• A) Works well only on water with low concentrations of dissolved impurities.
• B) Is efficient but extremely slow compared to other methods.
• C) Is prohibitively expensive; it would increase the cost of water beyond the reach of most homeowners.
• D) All of the choices are correct.

---

Definitions:

Midpoint Method

A formula used to calculate elasticity between two points on a demand curve, focusing on the average values to minimize bias.

Price Elasticity

How significantly the need for a good is affected by shifts in its price point.

Consumption

The use of goods and services by households.

Price Elasticity

A measure of how much the quantity demanded of a good responds to a change in the price of that good, expressed as a percentage change.