Which of the following is NOT one of the four main groups of macromolecules of living things? a. proteins
c. amino acids
b. nucleic acids
d. polysaccarides

The science for classifying and naming organisms is known as

This is the process of making a prediction based on the results of prior observations of similar events.

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