This graduated cylinder has numbers representing milliliters. A student says that the volume of the liquid inside is 21.8 millileters. What best explains why the student is wrong?
A:21.8 is at the top of the meniscus, but volume should be measured in the middle of the meniscus.
B:21.8 is at the top of the meniscus, but volume should be measured at the bottom of the meniscus.
C: Since the lines are only marked with whole numbers, the students must round to a whole number.
D: since the whole numbers represent milliliters, the student must use a unit smaller than milliliters.

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