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The answer is lipoproteins
Answer:
Interval training is a kind of exercise that consists of a series of high-intensity workouts interspersed with rest or recovery intervals. This sort of exercise is useful because it strengthens and improves the efficiency of the heart. It also lowers the risk of heart disease and hypertension.
Explanation:
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Pandemics are diseases that spread over large areas and affect large numbers of people. The Black Death in the 14th century killed nearly one quarter of Europe's population. The Spanish Flu, in 1918, killed more people than WWI.