South America is in both the Northern and ... Their teeth are designed to tear through plants and animals. Piranhas lose their teeth regularly, with new, sharp teeth growing in their place.

The source of their toxicity is unknown, but scientists assume that it may be from plant poisons ... macaws are iconic animals in the tropical forests of Central and South America.

Invasive plants can be even more troublesome, spreading far and wide and needing a variety of management practices to get ...

3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the vast seas and the first primitive plants ... of Africa, South America ...

South Africa is unleashing weevils imported from the United States in a bid to fight off the sprouting growth of Salvinia minima, an alien species of aquatic plant native to South America that is chok ...

This, in turn, would affect other animals ... primarily in South America, Central America and a bit in the Caribbean.” Kress ...