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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.
Human Evolution: Charles Darwin in the 'Origin of Species' gave a lilechanism for the evolution of plants and animals in general, even though he had speculated about the o
what is the nature of work when you are a zoologist
INTRODUCTION : In any science lab you work with chemicals, gases, electrical equipments, glassware, instruments etc. In case you are working in a biology laboratory handling the p
Question 1: (i) Show a diagram to show how temperature varies with altitude. Show clearly the location of the tropopause, stratopause and mesopause. (ii) Briefly explain the
Explain Light source - Pre-requisites of Colour Perception No colour may be detected by the eyes or by an instrument in the dark i.e. in the absence of a light source emitti
phalanges
Biological evolution We can presume that biological evolution began with the formation of the first true cells. These must have been forms that did not require free oxygen
Vitamins: You are, probably, familiar with the names of some of the vitamins. They can be obtained from plant and animal foods. Vitamins are required in small amounts and their
what are good conductors of heat?why is advantages to have ventilators in houses at the top of walls?
Ultraviolet Radiations : The ultraviolet (UV) light has higher energy than visible light. Hydrogen lamps, deuterium lamps and other sources of ultra-violet are used for a variety
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