<span>The darker an eye color the more melanin the eye has. The melanin concentration in the pigment of the iris cells acts as a way to protect the iris from higher sunlight by spreading the light out. So, in other words, the lighter someone's eyes are the more sensitive they are to light.</span>
By contracting, muscles pull on bones and allow the body to move. Muscles can only contract. They cannot actively extend, though they can move or relax back into the non-contracted neutral position. Therefore, to move bones in opposite directions, pairs of muscles must work in opposition
Answer:
Cardiovascular helps improve the heart, lungs, and blood flow. This is due to the exercises being ones that exercise mainly the heart and get the blood pumping.
Explanation:
Answer:
Option C.) Four
Explanation:
there should only be 4 sessions a week, and there should always be rest/break days.
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Hope this helped
