Write any two factors that affect the efficiency of machine
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The energy that you put into making the machine do work is a product of force and displacement. If you have to go further with your input force, than the object is moved, then your advantage is increased.

The factors that affect the efficiency of machine are

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gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

b - the respond is innate and varies over time.

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