HURRY UP PLSS! Complete the passage to summarize factors affecting the speed of a wave. The material or substance that a wave moves through is called a .

. The medium affects the speed of the wave that passes through it. One factor that affects the speed of a wave is the

of medium. Some waves move faster in solids and some waves move faster in liquids and gases. Another factor that affects wave speed is the

of the medium.

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