A sample is a smaller group of members of a population selected to represent the population. ... It requires that every possible sample of the selected size has an equal chance of being used. A parameter is a characteristic of a population. A statistic is a characteristic of a sample.
B.
Groups of similar cells that do a particular job.
Answer:
Typically, the more massive the planet, the more massive the atmosphere it can acquire and maintain. This is important because the mass of a planet's atmosphere will directly influence its climate. The location of the “habitable zone” around a star will therefore be a function of the mass of the planet in question.
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