Which of the following describes the difference between nitrogen-14 and nitrogen-15? ( point)
nitrogen-14 has 14 electrons, 14 protons, and 14 neutrons; nitrogen-15 has 15 electrons, 15 protons, and 15 neutrons
nitrogen-14 has 7 electrons, 7 protons, and 7 neutrons, nitrogen-15 has 8 electrons, 8 protons, and 8 neutrons
nitrogen-14 has 14 electrons, 14 protons, and 14 neutrons, nitrogen-15 has 14 electrons, 14 protons, and 15 neutrons
nitrogen-14 has 7 electrons, 7 protons, 7 neutrons nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons,

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