Light of wavelength 200.0 nm is incident on a metal plate with a threshold wavelength of 400.0 nm. what is the energy of the incident photon in electron volts?
a.
2.48 × 105 ev
c.
6.20 ev
b.
0.161 ev
d.
3.10 ev

Which order shows the levels of organization from largest to smallest? organism, organ system, cell, organ, tissue organism, tissue, organ system, organ, cell organism, organ, organ system, cell, tissue organism, organ system, organ, tissue, cell