The answer is : randomization was not used in sample selection. The major difference between experimental and quasi-experimental designs is lack of randomization in sampling selection.
It's know as chemical equilibrium
One of the major elements of natural selection is that all species have genetic variation. Natural selection is a process when organisms adapt better to their environment. It is an essential key in evolution. There is a change in phenotype of a population over time.
Hey there!
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_____ is when a force is exerted on an object and the object moves a distance in the direction of the force.
Answer: Work
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