Abiotic factors
The non-living components of an ecosystem
Eg climate, soil, water
Abrasion
When bits of eroded rock and water scrape against rock, eroding it
Agribusiness
Large scale, industrial farming that is usually controlled by large companies
Appropriate technology
Materials and methods that are cheap, sustainable and easily available to local people, enabling them to meet their basic needs
Attrition
When bits of a roded rock in water collide, break into smaller pieces and become more rounded
Beach nourishment
Adding sand or shingle from elsewhere to the upper part of a beach, often to prevent erosion
Biodiversity
The variety of organisms, both plants and animals, living in a particular area
Biomass
Natural material (wood, faeces) that can be burnt as fuel are used to make biofuels
Biotechnology
Genetically engineering crops
Biotic factors
The living components of an ecosystem
Eg plants, animals, people
Brownfield site
Land that has previously been developed, but is no longer in use
Carbon footprint
The amount of greenhouse gases produced by a particular product or an individual’s activity
Climate change
Any significant change in the Earth’s climate over a long period of time
Commercial farming
Farming crops or livestock to sell for a profit
Conservative plate margin
A tectonic plate boundary where two plates are moving sideways past each other, or in the same direction but at different speeds
No crust is created or destroyed
Consumer
An organism that gets its energy by eating other organisms
Coriolis effect
The apparent curve of winds across the Earth’s surface due to the planet’s rotation
Decomposer
An organism (eg fungi) that gets its energy by breaking down dead material
Deforestation
The clearance of large areas of forest
Deposition
The process of water dropping material as it slows down and loses energy
Desertification
A decline in the quality of land as it becomes drier and less productive
Destructive plate margin
A tectonic plate boundary where two plates are moving towards each other
The denser oceanic plate subducts beneath the less dense continental plate and is destroyed
If two continental plates meet, the ground is forced up, creating fold mountains
Discharge
The volume of water flowing in a river, measured in cumecs (cubic metres per second)
Drought
A long period of time with little to no precipitation
Can cause areas to experience water stress