Because your lungs get inflated like a balloon they become compressed when submerged in water and the air within is compressed. Air will not itself flow from one region of low pressure into a region of higher pressure. The diaphragm in one's body reduces lung pressure to permit breathing, but limit is strained when nearly 1m below the water surface. It is exceeded at more than 1,m.
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Mosquito coil.or some chemical pest spread
One way is by comparative anatomy. Comparing the similar bone structure of animals gives more proof of this theory. Also, the location of some animals compared to other animals of similar species is very convenient, and supports the theory of natural selection.
The answer is D
In prokaryotic cells, there is only one point of origin. However, replication is faster than eukaryotes because replication in prokaryotic cells occur in two opposing directions at the same time, and takes place in the cell cytoplasm.
