UWC Grade 5 (2009-2010)

In most tropical rainforests, it rains every day.

Rainforests need lots of water and most of it comes pouring down as rain - at least 200 cm per year.

Three very toxic species of poison dart frogs from Colombia and South America are utilized by Indians to poison the tips of blowgun darts

Animals that live in the tundra have special adaptations that allow them to survive the extreme temperatures and conditions that are present in a tundra.  A good example of an animal with special adaptations is the Arctic Fox.  The Arctic Fox has short ears and a short, round body with a thick coat to minimize the amount of skin exposed to the frigid air.  There is a low amount of biodiversity in the tundra so fluctuations in one animal population will effect populations in another.  An example of this would be that if in a certain year there is a lower amount of Lemmings than usual, then the population of Snowy Owls, who feed mostly on Lemmings, will also decrease.