11 (10) Which of the following is an example of a structural adaptation?
A A mouse hiding in a hole to avoid predators.
B A woodpecker's sharp beak is used to peck tree bark for insects.
An opossum pretends to be dead when it feels threatened.
D An owl nesting high in the tree away from a predator's reach.

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