What is the best prediction for what will happen when all of the hydrogen in the sun has undergone fusion?

a. helium nuclei will split to form hydrogen, and the sun will no longer release energy.

b. helium nuclei will split to form hydrogen, and the sun will continue to release energy.

c. helium nuclei will fuse to create heavier elements, but the sun will no longer release energy.

d. helium nuclei will fuse to create heavier elements, and the sun will continue to release energy.

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

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii

Which action is a reflex action. a. asking for coffe in a cold climate b. blinking when light is flashed in the eyes c. drinking water when thirsty. d. swallowing food e. taking an exam