Why are scientific explanations subject to change? A)
Scientists always need better technology.
B)
Scientific explanations are only a best guess.
C)
New scientific explanations are always better than old explanations.
D)
Scientific explanations are based on new observations and making sense
out of those observations

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