Chapter Ten (Sarah)

Chapter ten focuses on how species of the same genus end up in different parts of the world. It talk how the continents were once connected and and animals could travel from place to place. Another thing is that humans transported animals, plants, and diseases while traveling. Some species become invasive and can hurt the ecosystem that's already established. Can an invasive species be good for an ecosystem? Invasive species are normally introduced with a specific reason, but are there any cases of invasive species accomplishing their intended goals?