Ecology(cont What is the present state of global ecosystems(cont ) Of 76 countries that encompass tropical orests, only 4-Brazil, guyana, Papau New Guinea and Zaire- are likely to retain major tracts by 2010 From 4B-6 4B people worldwide who will live on coasts by 2025 resently 2B people live with water constraints each year. o fresh drinking water predicted to be #1 source of global conflict in 21st centuryEcology (cont.) What is the present state of global ecosystems (cont.)? – Of 76 countries that encompass tropical forests, only 4 - Brazil, Guyana, Papau New Guinea and Zaire - are likely to retain major tracts by 2010. – From 4B - 6.4B people worldwide who will live on coasts by 2025. – Presently 2B people live with water constraints each year. fresh drinking water predicted to be #1 source of global conflict in 21st century