Answer:
The structural and functional unit of skeletal muscle is called a sacormere
The connective tissue covering around a fascicle is the perimysium
The part of a muscle fiber that contracts is called the myofibril
The connective tissue covering on the outside of a whole muscle is the Epimysium
Explanation:
Answer:
Blood circulates through a network of vessels throughout the body to provide individual cells with oxygen and nutrients and helps dispose of metabolic wastes
Explanation:
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22 percent of solar radiation is filtered by clouds and may cause sunburn on cloudy days.
According<span> to the SCF, up to </span>eighty %<span> of the sun's </span>ultraviolet illumination<span> rays </span>will taste<span> clouds. T</span>his is<span> </span>the rationale folks<span> often </span>find yourself<span> with serious sunburns on overcast days if they've </span>hung out<span> outside with no sun protection.</span>
Answer:
Pigmentation, (skin color), in humans has evolved under selection pressure from the duration and intensity of sunlight. Ancestral populations near the equator were selected for dark skin, while those living in higher northern latitudes were selected for lighter skin.
