Researchers have identified precisely 4,500 languages in the world.
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That statement is true.

The researchers indeed had found around 4,500 languages in the world.
In the smaller part of the world, the language may even differ in a same region and culture if it's spoken by different families

Participating in sports has a positive influence in many areas. It supports positive mental health and improves social skills along with promoting physical health. Participating in sports develops healthy living habits that provide physical benefits such as developing coordination, physical fitness, and strength.