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Just point out that humans are a part of nature, not apart from nature.

that statement would be kind of nonsensical -- humans are inseparably part of nature. Saying "humans suck but nature is great" is (at worst) an ecofascist idea or (at best) internalizing the lie that "humans are evil by nature" when it's really just living under various hierarchies that emphasizes the worst parts of us.

Those wasps that reproduce by laying their eggs in other bugs and then when the eggs hatch they eat the other bug alive from the inside

There are lots of bird species that lay their eggs in the nests of other birds, meaning they don't have to raise their own offspring. Often the nest-invading species hatches earlier and grows faster to outcompete the chicks of the nest owners for food. This often means those chicks eventually starve to death.