Vensim program slove the fllowing

Today approximately five million Eucalyptus trees stand in Namanve Forest. Umeme has been cutting down, harvesting approximately one hundred thousand trees every year. NEMA is concerned that the forest will be entirely be destroyed and has been working hard to plant as many trees as possible. They have been able to plant approximately five thousand trees every year. How many trees will be there in Namanve in thirty years