What’s the meaning of the following sentence?

There is little justification for society to make extraordinary efforts — especially at a great cost in money and jobs — to save endangered animal or plant species.

Question

What’s the meaning of the following sentence?

There is little justification for society to make extraordinary efforts — especially at a great cost in money and jobs — to save endangered animal or plant species.

Answer

To justify an action is to provide a good reason or explanation for carrying it out.

According to the writer, society finds no reason (has no incentive) to take large scale action to save endangered animal or plant species.