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Explain Acclimatization - Histotoxic Hypoxia
A compensatory respiratory adjustment at moderately high altitudes is called acclimatization. If you were to visit places like Leh (Ladakh) you would be told that you would need some time to acclimatize.
At very high altitudes, the alveolar pO2 may fall to 40 millimeters of mercury and haemoglobin will be only 75% saturated. At this point, increased ventilation will make a dramatic difference in the amount of oxygen loaded into the blood. At high altitudes, there are not only changes in respiration but also changes in blood and circulation, in kidney.
Explain Age Related Changes - Ageing Age related changes are mainly observed at a cellular level. The connective tissues throughout body show an increase in stiffness because o
A field trip to a rock quarry The quarry should be visited by the teacher in advance. View how the rock is removed. If the rock is sedimentary, view the layers. Collect rock sa
feeding modes of insect,reptiles,amphipians,bird,fish and mammals
Explain Protective and Excretory Function Protective function: Large quantity of mucin is secreted by gastric glands. Mucin lubricates the food bolus (a mass of chewed food) an
Classification of Fires As explained also. We can say that the four main sources of fire risk in the science laboratory are: i) flammable substances, ii) compressed and
motion is a change in what
what are the functions of the natural environment?
Solar energy: The energy we get today from the fossil fuels like coal, is in reality sun's energy, trapped in them millions of years ago. Plants make their food and grow bec
What is the name for a roughly circular coral reef enclosing a shallow lagoon: atoll
Satellite : Satellite transmission is one important symbol of revolution in communication technology. Besides transmitting picture and sound over long distances, it has revoluti
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