Question

if humans know importance of animals then why they hurt them​

Answer 1

Answer:

The motive may be to shock, threaten, intimidate or offend others or to demonstrate rejection of society's rules. Some who are cruel to animals copy acts they have seen or that have been done to them. Others see harming an animal as a safe way to get revenge against—or threaten—someone who cares about that animal.

Explanation:

Answer 2

Answer:

The fact that they know their economic importance too.

Explanation:

Knowing their importance for ecology is rather uncommon among people. They know their economic importance though which leads to harming animals and their overexploitation.