They may also appear on other parts of the body. Warts have a rough texture and are caused by viruses, particularly one of several kinds of HPV (human papillomavirus). The virus causes keratin, which is a hard protein on the top layer of the skin, to grow too fast. Warts are not the same as moles.
The tropical rainforest is a hot, moist biome found near Earth's equator. The world's largest tropical rainforests are in South America, Africa, and Southeast Asia. Tropical rainforests receive from 60 to 160 inches of precipitation that is fairly evenly distributed throughout the year. The combination of constant warmth and abundant moisture makes the tropical rainforest a suitable environment for many plants and animals. Tropical rainforests contain the greatest biodiversity in the world. Over 15 million species of plants and animals live within this biome.
It is right there in the name â rainforests are known for lots of precipitation every year. Rainfall in the tropical rainforest is year round, particularly as there are little to no seasonal changes to weather. Tropical rainforests receive annual precipitation amounts of 60 to 160 inches (152 to 406 cm). Some rainforests in the world experience annual rainfall amounts of almost 400 inches (over 1,000 cm).