Ozone: a. formation is promoted by CFCs

b. is broken down by carbon dioxide

c. is a source of oxygen for cellular respiration

d. levels in the atmosphere continue to increase

e. protects Earth from UV radiation

What is the compliment dna strand to the following sequence: ttgactaggcta

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f

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