Which of these are uses for nonvascular plants and seedless vascular plants? Check all that apply.
burning as fuel
stopping bleeding
improving vision
putting out fires
decorating homes
conditioning soil

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.