How will what affect polar bears?
The method used here is agarose gel elecrtrophoresis in which DNA ladder is used which is a set of standard used to determine the size of DNA used .The DNA ladder is put adjacent to the DNA fragments to be visualized Suppose if the ladder shows 300 basepair so the DNA adjacent to this number will be of this size.These are the set standards used to determine the size of DNA or RNA. For a range we can take 2% of agrarose to run DNA fragments upto 500 Basepair. Most of the amplified DNA falls into this category size.
As the toy car slides down a ramp, its potential energy was transformed into kinetic energy.
Diffusion happens in living systems for example it explains the movement of carbon dioxide in leaves. Plants absorbs water from the soil by osmosis through their roots hair cell. Animals molecules enter the body cells and waste products are removed.
Answer: "the atmosphere" ;
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or, more specifically; the "nitrogen gas from the Earth's atmosphere";
{" N₂ gas in the Earth's atmosphere" } .
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