Glossary

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F

Food chain

How each living thing gets their energy

Food web

Systems of interlocking and interdependent food chains

Fossil water

An ancient body of water that has been contained in some undisturbed space, such as subglacial lakes or aquifers, and may have laid there for millennia

G

Gross domestic product

Measures the value of economic activity within a country. GDP is the sum of the market values, or prices, of all final goods and services produced in a country during a given period of time

Groundwater

Fresh water located in the subsurface pore space of soil and rocks that collects within aquifers

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