Why Important To Know The Electricity?

Why Important to know the electricity?

  Electricity Is Very Important To us To make Life Easier and Its Very Harmful To us also Because of the Global Warming that will affect the Earth

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Explain The Types Of Blood Vessels

Explain the types of blood vessels   Answer: There are three main types of blood vessels: arteries veins capillaries Explanation: Arteries . Arteries carry oxygen-rich blood away from the heart to all of the bodys tissues. They branch several times, becoming smaller and smaller as they carry blood farther from the heart and into organs. Capillaries . These are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow oxygen, nutrients, carbon dioxide, and other waste products to pass to and from cells. Veins . These are blood vessels that take blood back to the heart; this blood contains less oxygen and is rich in waste products that are to be excreted or removed from the body. Veins become larger as they get closer to the heart. The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart.
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