Examlex
Explain how the most important element in the Columbian exchange was the trade in biological material.
Water
A transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans.
Positive Reinforcement
A process in which presenting a stimulus following a behavior increases the likelihood of the behavior occurring again.
Stimulus
A stimulus is anything in the environment that one can respond to.
Behavior
The range of actions and mannerisms made by individuals, organisms, systems, or artificial entities in conjunction with themselves or their environment.
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