2A+Rain+Forest+Deforestation

media type="file" key="1photostorie 2A.wmv"

Abotics/ Biotics In the rainforest the total rainfall for a year is 1500 and 2500mm.the temperate is about 30C - 35C. At night it gets to 20C-25C. 80-400in. per year the mean temperate in the rainforest are between 70F – 85F. Every 1,000 foot rises in altitude there gets a 4F drop in the temp. Tropical rainforests are near the equator. Brazil is 1/3 of it is covered with rainforest. Temperatures for tropical is warm, The temperate is cool Number of tree species in tropical are hundreds temperate few10-20 Age of trees, tropical are 50-100 years old, temperate 500-1000 years old Decomposition rate, tropical rapid, temperate slow



Possible threats · Population growth: cut down trees to make houses, schools, shops ect… · Paper: cut down the trees to make paper · Ozone layer: gases cfcs · Green house gas: emissions from work plants · Wood burning: to build working plants · Global warming: car egoist

Importance · Fruits For food and markets · Trees for houses, fire wood, paper, oxogen · Fish for food and market