Question

Invasive species can enter a habitat in many ways. How were these invasive species introduced?

Answer 1

A species of rats entered a habitat stowed away in a train.=unintentional introduction

A man added invasive water hyacinths to beautify his private lake.=intentional introduction

A flood prompted many aquatic species to inhabit a new area.=loss of habitat

Answer 2

One way this could have happened is something in their own ecosystem which threw off the food chain. They most likely migrated to a new ecosystem and invaded it to survive and get energy.