相关素材Overpopulation
Overpopulation,Instructors:Marcelo & Bowen,What is Overpopulation?,A condition where an organism's numbers exceed the carrying capacity of its habitat.,Doesnt depend only on the size or density of the population, but on the ratio of population to available sustainable resources.,Video,http:/www.youtube.com/watch?v=l7wiU_o4UlA,Brainstorm,If overpopulation continues, what problems we have to face?,Problems,Inadequate fresh water Depletion of natural resources Deforestation and loss of ecosystems Changes in atmospheric composition and consequent Elevated crime rate,Inadequate fresh water,Depletion of natural resources,Deforestation and loss of ecosystems,Changes in atmospheric composition and consequent,How to prevent?,Suggestions,Condoms Education Keep your legs closed! Birth control Don't sleep with a different guy every weekend!,THE END,