The Layer Where Organisms Can Exist on the Surface of the Earth

question 20

Multiple Choice

The layer where organisms can exist on the surface of the earth is the

• A)biosphere.
• B)ecosystem.
• C)population.
• D)homeostasis.
• E)community.

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Definitions:

Binomial Random Variable

A type of random variable that arises from processes that consist of a fixed number of trials, each of which leads to a binary outcome (success or failure).

Variance

A measure of the dispersion or spread of a set of data points around their mean.

Standard Deviation

An indicator of the degree of spread or variability among a collection of numbers.

Variance

A measure of the dispersion of a set of data points around their mean; shows how much the data vary from the average.