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Yogita Ingle 5 years, 1 month ago
- Exchange of gases takes place between the alveoli of lungs and the surrounding blood capillaries. The two main gases exchanged are oxygen and carbon-dioxide. Oxygen is absorbed by the blood capillaries from the lungs alveoli by diffusion while carbon-dioxide is absorbed by the lungs alveoli from blood capillaries by diffusion.
- Transport of oxygen and carbon-dioxide occurs with the help of respiratory pigment called hemoglobin.
- Hemoglobin, the iron containing respiratory pigment is a red colored pigment of blood, which has a very high affinity for oxygen. Hemoglobin though is purple colored but oxy-hemoglobin is of bright red color. Oxygen is transported from lungs to the body cells in the form of oxy-hemoglobin.
- Carbon-dioxide is transported from the body cell to the lungs in the forms of carboxy-hemoglobin, carbonic acid, bicarbonates of sodium and potassium.
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- Forests are large regions of land covered with tree, shrubs, herbs. It sustains a variety of life forms.
- Naturally occurring plants and animals are the flora and fauna of the forests.
- Forests are biodiversity hotspots.
- The loss of forests and wild life leads to the ecological imbalance.
- Hence, it is important to conserve forests and wild life.
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Yogita Ingle 4 years, 6 months ago
The horsepower (hp) is a unit in the foot-pound-second ( fps ) or English system, sometimes used to express the rate at which mechanical energy is expended. It was originally defined as 550 foot-pounds per second (ft-lb/s).
A power level of 1 hp is approximately equivalent to 746 watt s (W) or 0.746 kilowatt s (kW).
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