B. As a cross country runner its very important to warm up before I run a marathon or a long distance run or just any run in general its always something I have to do. If your do the strenuous activity without warming up your muscles will be tight and will sort of go into shock. By warming up you are releasing tension in your muscles and ligaments and getting you blood flowing. In my experience I didn't warmup once before a half marathon and had to stop about a mile in because I tore my hamstring. It strained it right off the bat and kept getting worse just because I forgot to stretch! I hope this helps!
Answer:
The trichromatic theory states that there are three receptors in the retina that are responsible for our perception of color. The opponent-process theory states that there are three opposite reacting complexes in our retina that control our perception of color. together the theories explain how we perceive color and how those perceptions are connected to our nerve cells.
Explanation:
The trichromatic theory is about the receptors that help us perceive color. The opponent- processing theory explains how those receptors are connected to our nerves.
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