Burning less than 400 calories per hour is not the correct about the benefit of swimming. So option “D” is the correct option. In reality a person burns between 450 to 900 calories per hour while swimming. Swimming actually helps in the full body exercise of a person. This proves that option “B”” is not applicable. Swimming is also a great exercise for cross country training and so option “C” also is removed. Option “A” cannot be applied for this question as maximum number of joints are supported by the water.
Answer: D - Hyperventilation.
Explanation: Hyperventilation is breathing in excess or overbreathing more than what the body needs.
Fast and deep breathing occurs when one's rate of breathing removes more carbon dioxide than the body can produce. This can change what is in the blood due to the reduction in the concentration of carbon dioxide dissolved in the blood which can cause the blood pH to rise, leading to respiratory alkalosis.
Some conditions which can bring about hyperventilation include Anxiety disorder, Panicattack, Asthma,Stress, effect of drugs, head injury etc.
Workers in the industrialized sectors laboured in factories rather than in scattered shops or homes. Steam and water power required a concentration of labour close to the power source. Concentration of labour also allowed new discipline and specialization, which increased productivity.
Answer:
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