In an average year the climate in a tropical rain forest is very humid because of all the rainfall. A tropical rainforest gets about 150 cm of rain per year. It gets lots of rain because it is very hot and wet in rain forests. The hotter the air, the more water vapor it can hold.
Across America, the Russet Burbank has a declining market share, but is still no small potatoes. In 2008, Idaho potato farmers planted 57 percent of their total acres with Russet Burbanks, while the variety accounted for 41 percent across the eight biggest potato-producing states.
The world dedicated 18.6 million hectares in 2010 for potato cultivation. The average world farm yield for potato was 17.4 tonnes per hectare, in 2010. Potato farms in the United States were the most productive in 2010, with a nationwide average of 44.3 tonnes per hectare.