The Covariance

question 193

Multiple Choice

The covariance

• A)must be between -1 and
• B)must be positive.
• C)can be positive or negative.
• D)must be less than

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Definitions:

Out Of Africa

A theory that suggests all modern humans originated from a common ancestral population in Africa before dispersing to other parts of the world.

Multiregional Model

A theory of human evolution proposing that modern humans originated from several different groups of homo sapiens spreading from Africa to other parts of the world.

Human Evolution

The lengthy process of change by which people originated from apelike ancestors, spanning millions of years.

Bacterial Niche

Specific environments or conditions where certain bacteria can thrive and survive better than in other places.