Answer: False
Explanation: Pitch does not depend on how fast or slow an object vibrates.
b) in the blood include monocytes and neutrophils.
The density of ice is less than water - that's why it floats on water. I think this property is unique in liquids.
If ice was equal or heavier density than water then the oceans would be solid except for near the surface, which would be very bad for aquatic life!!