T. J is now receiving 35% oxygen via a Venturi-mask. Explain how the venturi-mask works and why it is a preferred flow system for COPD patients. Should T. J request to have his oxygen flow turned up do to increase shortness of breath, how would you respond? Why?

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes