Question

The world heritage committee has divided the worlds countries into five geographic zones (write in present perfect continuous tense)

Answer 1

The correct answer will be, “The world heritage committee has been dividing the world countries into five geographical zones.”

The main rule that is used for the present perfect continuous tense is – have/has + been + (root + ing) perfect participle.

With the help of this rule, you can easily convert the sentence.  

Answer 2

The world countries are being divided into five geographic zones by the world heritage committee.

This is the answer to the question to change the tense of the sentence.

The sentence has been converted to present perfect continuous tense from the simple present tense.

This is present continuous because the verb tense is changed to present continuous.