Parks, woodlands, forests, jungles are areas where countless of living organisms had made their homes. And where they’d probably live for thousands of years. If we don’t send (over) our chainsaws first.”
Is the over necessary? (or maybe there's a better option?)
If you just say:
If we don’t send our chainsaws first.
it does not really say where the chainsaws would be sent to, though it may be implied in context.
But when you say:
If we don’t send over our chainsaws first.
the meaning is the same as:
If we don’t send our chainsaws over (there) first.
"there" being the "Parks, woodlands, forests, jungles" mentioned in the previous sentence.
Another example:
I received your payment. I will send your package tomorrow.
does not really say where you are sending it to, while:
I received your payment. I will send over your package tomorrow.
means the package will be sent to you.
