Question

2. Watch again the video and complete with the correct word. Drag and drop. chambers vital oxygen pump [ ] ventricles bottom upper is to The heart is one of the atrium organs of the body. Its essential function blood through the circulatory system, which provides to the body. The human heart is made up of four The chambers are called the left and the right and the chambers are known as left and right 3. Order the sentences about how circulation works. Remember that is a cycle and never stops. Clue: the first one is ... The deoxygenated." The oxygenated blood travels back through the pulmonary veins into the left atrium. The blood goes through the tricuspid valve to the right ventricle. The blood mixes with the oxygen in the lungs. The deoxygenated blood enters the upper right atrium through the superior and inferior vena cava. The blood goes through the mitral valve to the left ventricle. The right ventricle pumps the blood through the pulmonary artery directly into the lungs. Finally the left ventricle pumps the blood trough the aorta to the rest of the body.​

Answer 1

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Scientists already know for sure what will happen in the future. Industries will continue to cause many changes.

One important change in the future will be the temperature. Scientists say that by 2050 the planet will have a temperature increase of a 3 to 4°C. It seems like nothing, but it will have enormous effects on ecosystems.

By 2050, the sea level will be 25 centimeters higher. With higher temperatures, the defrosting process in Antarctica will become twice as fast. The glaciers are going to melt. This will result in an increase in the sea level. Another consequence will be the floods. The likelihood of flooding in coastal towns will rise more than nine times. The economic losses will be greater than 50 billion dollars.

The growth of the Himalayas will be another change. In 2050 the highest mountain range is going to be 165 millimeters higher due to the movement of the Indian plate below it. The nearby towns are worried about the possibility of earthquakes in the area.

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