The nile river delta is an example of a formal region. true or false

The Nile River Delta is an example of a formal region. 
It is true!
A formal region is the one defined by the government and The Nile River Delta belongs to this category. This is the world's largest river deltas which is about one hundred and sixty kilometers long. It has been a populated and cultivated delta for more than a thousand years.

1."lessen the worth of ."

2."increase the worth of."

3." beyond the worth of."

4."against the worth of ."

answer; ///(true)/// fusion occurs in the sun's core;