India’s geography contributed to its isolation from the rest
of Asia. It is a peninsula but on the North, the Himalayas shields it from
invasion of both men and ideas. On the East there are dense forests that
although have lower height, is infested with malaria. Great oceans surround the
south and mountain ranges that are difficult to traverse block the West. As a
result, the Indian community developed its caste system, the most elaborate
expression in history of an unmoving agricultural society.
Answer:
A.
Explanation:
To find out if a call of an animal is missing.
It would be A. because the selection said, "The more scientist's listen to these kind of recordings, the more they notice when expected call are missing".
