It is invasive and destructive. Birds will eat its pretty seeds and disperse them. Left unchecked, Bittervine overtakes landscapes, literally smothering trees, shrubs, and any plant in its path with twisting vines, sometimes 4 inches thick, and so heavy it uproots large trees under its weight.

created by TING-YU LIANG , Team LOUIS (WSHS)

created by TING-YU LIANG ,Team LOUIS (WSHS)

Because of their large size and voracious appetite, bullfrogs outcompete and prey upon many indigenous species. They are hypothesized to be cause significant negative impacts, which may contribute to the endangerment and extinction of some sensitive species.

created by TING-YU LIANG ,Team LOUIS (WSHS)

Green iguanas cause damage to residential and commercial landscape vegetation and are often considered a nuisance by property owners. ... Some green iguanas cause damage to infrastructure by digging burrows that erode and collapse sidewalks, foundations, seawalls, berms and canal banks.

created by TING-YU LIANG ,Team LOUIS (WSHS)

Water-hyacinth blocks waterways and limits boat traffic, recreation, flood control and wildlife use. By producing a dense canopy at the water surface, this exotic pest plant shades out native submersed plant species and can uproot native emergent species that are important to wildlife.

created by TING-YU LIANG ,Team LOUIS (WSHS)

Applesnails have the potential to compete with native species for limited resources. These two snail species feed on all types of aquatic plants. Such an intense consumption of plants could alter the natural balance of a water system.

created by TING-YU LIANG ,Team LOUIS (WSHS)