if humans are animals, why is it a bad thing that we carry “invasive” species to different places? and why are they considered to be invasive things we need to get rid of?

Question

NOTE: i am in no way saying carrying invasive species around isn’t bad/harmful! it very much is a big issue. i am just a bit lost on how humans (being animals) are doing “incorrect” unnatural things since we are natural(compared to other living things who don’t necessarily harm their environment)

okay, so i don’t really understand the whole invasive species thing. when humans carry plants/animals to different regions and they start rapidly growing there, why do we need to get rid of them? humans are animals as well (great apes), and a way that seeds/eggs spread is by grabbing onto other animals as they travel. so why is it different when people do it? i’m just confused

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Answer 1

Let’s say I introduce some new fish to a lake, fish A,, these fish reproduce and grow much faster than the native fish, fish B, as a result they eat a lot of the food and most of fish B die out, the local predator fish, Fish C, expand in numbers due to the abundance of Fish A to eat.

Then Fish A start to die out as they’ve eaten to much of the food supply, this is sped up by Fish C who also eat the last of fish B.

Now we have a lack with no fish left.

That’s the danger of invasive species.