According to the laws of thermal radiation, hotter objects emit photons with .
a) a lower average frequency
b) a shorter average wavelength
c) a higher average speed
d) a lower average energy

Amethod of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

It's because 3 if it was 10 it wouldn't look right do it goes up to 4d

Domain eukarya; kingdom plantae should be the answer.