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natka813 [3]
3 years ago
11

What are the characteristics that classify an object as being living called?

Biology
1 answer:
Arte-miy333 [17]3 years ago
4 0

Three of the major characteristics used to classify organisms are cell structure, mode of nutrition and cellularity. These characteristics help scientists determine how organisms are similar to each other as well as how they are different from each other.

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Answer:

1: (The arteries carry blood away from the heart; the veins carry it back to the heart.)

2: (In the systemic circulation, the left ventricle pumps oxygen-rich blood into the aorta.)

4: (Blood, which is low in oxygen, is collected in veins and travels to the right atrium and into the right ventricle.)

Explanation:

The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. ... In the systemic circulation, the left ventricle pumps oxygen-rich blood into the main artery (aorta).

The arteries carry blood away from the heart; the veins carry it back to the heart. ... The blood travels from the main artery to larger and smaller arteries and into the capillary network. There the blood drops off oxygen, nutrients and other important substances and picks up carbon dioxide and waste products.

The inferior and superior vena cava bring oxygen-poor blood from the body into the right atrium. The pulmonary artery channels oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream. The pulmonary veins bring oxygen-rich blood to the left atrium.

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