Phosphorus has three electrons in its 3p sublevel and sulfur has four. phosphorus should have the lower ionization energy but it does not, sulfur does. what does this provide evidence for?
a. hund' rule
b. none of these
c. aufbau's principle
d. conservation of energy

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

"a.) well–developed vascular system."

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic