Answer:
Cost : The expenditure incurred by a producer on the factor as well as non-factor inputs for a given amount of output of a commodity.
If water had weak surface tension, insects would not be able to land on or walk on water.
Surface tension is the force acting on the surface of water that makes it to behave like a stretched elastic skin.
Surface tension owes to the intermolecular attraction between water molecules. The molecules at the surface of water are drawn inwards by other molecules causing the molecules at the surface to contract. This surface tension enables insects to land on or walk on water.
So, without surface tension of water, insects would not be able to land on or walk on water.
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If sodium ions are outside of a cell, they will tend to move into the cell based on both their concentration gradient and the voltage across the membrane (the more negative charge on the inside of the membrane). So cells pump out the extra ions.
This is what my candidate teacher said..
The answer is Hematology.
usually this is the measuring device of amount of rain fall.
you can buy these, but most of the time meteorologists will have these to measure the amount of rain fall
