The set theory is a branch of mathematics that studies collections of objects called sets. The set theory explains nearly all definitions of mathematical objects.
A person who studies Fleas.
What means import in social studies
The characteristics of related literature and studies are vast and elaborate. One of these studies looks at Greek tragedies.
what is the field that studies the means of improveing hereditary characteristics
No, a physicist studies motion, energy and similar things. An astronomer studies objects in space, though not necessarily the physics of those objects. People who study the physics of objects in space are called astrophysicists.
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