What should be changed to make the following sentence true? ""fluid intelligence is characterized as acquired knowledge and the ability to retrieve it.""

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.

Name three populations commonly found in a prairie system