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Define age related changes in Cardiovascular system
There is a decrease in elasticity of the aorta and other large arteries as age increases. Thickness of blood vessels increases leading to a rise in blood pressure. The myocardium (muscle wall of the heart) shows atrophy. There are structural changes in the valves. Number of pacemaker cells gets reduced, thereby a reduction in heart rate is observed.
Transport: River Valley civilisations were characterised by settlements along the rivers and growth of cities which needed, among.other things, stones and wood from distant
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Differentiate between soil water content and plant available soil moisture. The mass of water lost relative to mass of dry soil is called soil water content whereas plant avai
How to neutralize the ethyl alcohol used for determined alcoholic acidity.
Explain the Respiratory Adjustments Certain adjustments need to be made inside our body as well, to cope up with the varying environmental conditions, as well as, abnormal and
The characteristic properties of an aquifer can be used to calculate groundwater velocities, v groundwater (L/T), according to: V groundwater = K H / η (dh/dl) where KH (L/
three adaptations that help humans have differential survivability, and three adaptations that help humans have differential fecundity
Effects of Global warming ñ Alterations in the Global Precipitation: A more warm atmosphere will contribute to enhanced evaporation from surface waters and leads to the more
what is subphylum chordata?
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