Deepak was lifting heavy weights for exercises. After some time he could feel cramping pains in his muscle. He took some rest and when his breathing came back to normal the pain also diminished. Describe the reason for this.

The correct answer is - muscle soreness and overexertion.

Explanation:

When an individual does strenuous physical activity such as heavy weight lifting, muscles of the body extend and contract to support the pressure and movement.

Such weight lifting or physical activity repeatedly and for prolonged, time can overexert the muscles and muscle soreness with pain in the muscle. After resting muscle relaxed again and breathing helps in providing oxygen to muscles for aerobic respiration for more energy.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.