Why can non native specie become a problem?

Non-native species can become a problem because they often lack natural predators in their new environment, allowing their populations to grow unchecked. This can disrupt local ecosystems, outcompete native species for resources, and lead to declines or extinctions of indigenous plants and animals. Additionally, non-native species can introduce diseases and alter habitats, further destabilizing the ecological balance. Their presence can also impact agriculture and fisheries, leading to economic consequences for human communities.