pls help me and nooo links

Asian carp were originally brought to the US to help mitigate algal blooms. However, they soon took over the waterways of the Mississippi and threaten the Great Lakes. Millions of dollars are being spent to combat these invasive species. Why are invasive species a threat to ecosystems?

invasive species lack natural predators and take resources away from native species

invasive species release toxins into the environment

invasive species cannot adapt to their new environment

invasive species like to proliferate (reproduce)