The below graph shows both ventilation and blood lactate concentration as a function of total oxygen consumption during a bout of exercise. Explain the relationship between these two variables and why these two measures (ventilatory threshold and lactate threshold) tend to occur around the same level of exercise intensity. Ventilation, L-min¹ 170 150 130 110 90 70 50 30 10 • Ventilation Lactic Acid 0.5 Ventilatory threshold Anaerobic threshold 12 11 10 3 2 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Oxygen Consumption, L-min Lactic Acid, mM.L

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Air Pollution

The excess accumulation of pollutants or undesirable alterations in the environment and its resources such as air, water, and land can be referred to as pollution. Pollution affects the components of the environment. Pollution is considered a global issue as it is showing harmful effects worldwide. Metropolitan cities are more impacted by pollution than countryside or villages.