What is the source of energy for an earthquake?
a.
heat from the asthenosphere
b.
the earth's magnetic field
c.
the building of volcanoes
d.
motion of tectonic plates

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

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.

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~