Which three statements provide reasons that scientists are considering renewable sources of energy? most renewable resources are clean and nonpolluting. renewable resources can be replenished. renewable resources are conventional resources. most renewable resources are easily available in nature. all renewable resources are cost effective. a.) most renewable resources are clean and nonpolluting. b.) renewable resources can be replenished. c.) renewable resources are conventional resources. d.) most renewable resources are easily available in nature. e.) all renewable resources are cost effective.

its actually a b and d . Conventional energy means the energy source which is obtained from fixed reserves in nature like oil, gas and coal. In other words conventional energy is also termed as non-renewable energy sources, or fossil fuels. so c is wrong

A.) Most renewable resources are clean and nonpolluting.

B.) Renewable resources can be replenished.

D.) Most renewable resources are easily available in nature.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.