Spring tides occur when the high tide grows very high and the low tide grows very low, creating a large tidal range. Spring tides typically occur twice a month. (The name “spring tides” does not have any relation to the spring season.) Using the graph, identify two dates within the month that best fit the description of a spring tide, the largest tidal range.

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