The Type of Study That Allows a Direct Determination of a Causal

question 75

Short Answer

The type of study that allows a direct determination of a causal relationship between two variables is a(n) _____.

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Definitions:

The Origin of Species

A seminal book by Charles Darwin published in 1859, formally introducing the scientific theory of evolution by natural selection.

Scientific Contribution

The addition of knowledge, findings, or innovations to a specific field or discipline by a researcher or group of researchers.

Charles Darwin

A British naturalist, who is best known for his contributions to the theory of evolution and his proposal of natural selection as a mechanism for evolution.

Alfred Russel Wallace

A British naturalist, explorer, geographer, and biologist known for independently conceiving the theory of evolution through natural selection.