Presentation on theme: "1 Review List the three primary types of human activities that have affected regional and global environments. For each, give one benefit and one environmental."— Presentation transcript:
1 1 Review List the three primary types of human activities that have affected regional and global environments. For each, give one benefit and one environmental cost 2 Review What is sustainable development and how can it help minimize the negative impacts of human activities Apply Concepts In addition to filtering water, wetlands provide flood control by absorbing excess water. Explain how society would provide these services if the ecosystem could not. 3 Description What signs of growth do you see in your community? Write a paragraph telling how this growth might affect local environments.
2 Ch 6 Humans in the Biosphere 6.1 A Changing Landscape
3 The Effect of Human Activity Living on Island EarthAgricultureDevelopmentIndustrial Growth.
4 Living on Island Earth Land, food, and water are limited resources Human activity has used or altered roughly half of all the land that’s not covered with ice and snow.
5 AgricultureModern agricultural practices have enabled farmers to double world food production over the last 50 yearsMonocultureClearing large areas of land to plant a single highly productive crop year after yearEnables efficient sowing, tending, and harvesting of crops using machines.
6 Development People began to congregate and formed towns More people moved into citiesCities got crowed people moved to suburbs…What is the result.
7 Industrial Growth Modern conveniences High energy use Industrial waste.
8 Sustainable Development Using natural resources in a way that does not cause long-term environmental harm.
9 Nonrenewable Resources Can be produced or replaced by a healthy ecosystemWindNonrenewable ResourcesNatural processes cannot replenish them within a reasonable amount of timeFossil fuels like coal, oil, and natural gas.