Why do some cells have more mitochondria than the others?

Some cells have more mitochondria than others because they need to process more glucose and produce more ATP. For example, fat cells are the major site for stored energy in the body. Fat cells therefore have more mitochondria because they have more glucose to process than other cells do.
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Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the