geography

a major ecosystem extending over a large area that is characterised by a dominant vegetation type and similar climate

the part of Earth that contains living organisms, including plants and animals

weather conditions over a long period of time

water on earth's surface, including oceans, rivers, lakes and dams

Earth's surface layer, including its soil, rocks and landforms

production that provides for current and future generations

amount of crop per unit area of land cultivated

capable of conserving the capacity of the environment to continue to support all life into the future

biomes transformed by humans

the maximum number of people or animals that can be supported by an area of land

alteration of arable land to barren land due to prolonged drought or human intervention: overgrazing, destructive agricultural practices