Please help due in 10 mins The production of plastics makes life, so it benefits society. On the other hand, the production of plastics causes air and water
, so it also harms society.

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.

Define a is a tiny pavket of energy

The identities of substances are the same before and after which type of change