Answer:
cream - contains a higher proportion of oil than water
ointment - dr4g mixed in approximately equal proportions of oil and water
i don't know about the other two sorry
It should be B. All of the other choices are used often by abusers
Answer:
f = 33.34 Hz
Explanation:
A wave has a period of 0.03 seconds. It is required to find the frequency of a wave. The relation between time period and frequency is inverse. The time period of a wave is given by :
T = 1/f, f = frequency of wave

So, the frequency of the wave is 33.34 Hz.
varying composition is not a property of a pure substance
Answer:
Heat
Explanation:
Higher temperatures cause solid solutes to dissolve at a faster rate than normal