PLEASE HELP The tundra biome gets about 20 cm of precipitation each year. the tropical rainforest gets about 200 cm of precipitation what percentage of precipitation does the tundra get compared to the amount the tropical rainforest receives?

Compare demographic and environmental effects of the columbian

What is the difference between emigrate and immigrate? ?

If we review the changes in the landscape surrounding the great salt lake in utah we can see a change in topography. look at the area to the south of the lake. what change has occurred during the last twenty-nine years? a) erosion of the hills b) an increase in marshland c) flooding of the area and the development of wetlands d) deposition of sediments and an increase in elevation