Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Q: Question: What phenomenon is crowding out other species and making all the other causes of extinction worse? Answer: human overpopulation

A: Human overpopulation, which is crowding out other species. It also makes all the other causes of extinction worse.
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Q: Question: What is an ionic bond in nature? Answer: electrostatic

A: An ionic bond is electrostatic in nature.
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Q: Question: The tyndall effect refers to the scattering of what by colloidal particles? Answer: visible light

A:
The Tyndall effect is the scattering of visible light by colloidal particles.
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