When communicating with apollo astronauts, there is approximately a 1.3 second delay in one-way communication. this is because

a)
space is a vacuum.

b)
the moon has virtually no atmosphere.

c)
radio waves travel at a speed of 186,000 miles/s.

d)
of the scattering of electromagnetic waves in space.

An experiment is conducted to see if cats preferred skim milk or 2% milk. a cup of skim milkwas put out for 5 kittens and then measured how much the kittens drank over the course of aday. following a cup of 2% milk was purout for the skittens and then masured how much thekittens drank over the course of a day. the same kittens were used and the milk was served atthe same temperature. it was discovered that the cats liked the 2% milk more than the skimmilk. what is the dependent variable in this experiment?