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GREAT BARRlER REEF - Saint Ignatius' Moodle Community

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acidification the process that makes water more acidic<br />

biodiversity the variety of living things in a particular place<br />

bycatch unwanted species caught by fishing nets and lines<br />

catchment run-off rainwater that collects in an area and flows through rivers into the sea<br />

climate change the process by which the world’s climate is changing due to an increase<br />

in the levels of certain gases in the atmosphere<br />

coastal development building on or using the land next to the sea<br />

controversial a subject about which there is strong disagreement<br />

coral bleaching when a major change in the environment stresses hard corals, causing<br />

them to turn white<br />

economy the system of organising goods and services<br />

ecosystem a community of living and non-living things and the interactions between them<br />

extinct having died out<br />

food web a community of species that depend on each other for food<br />

greenhouse gases gases such as carbon dioxide that trap heat in the atmosphere<br />

habitats the places where animals and plants live<br />

introduced species species brought to an area where they are not naturally found<br />

native naturally found in a region or country<br />

native title the recognition by Australian law that Indigenous people still practising their<br />

traditional laws and customs in a place hold rights to that place<br />

overfishing when so many individuals of a fish species are taken from an area that the<br />

population’s future is threatened<br />

pesticide a chemical used to kill pests such as insects<br />

polluted made impure<br />

predator an animal that lives by preying on other animals<br />

renewable something that is not used up and is able to be renewed<br />

salinity the concentration of salt in water or soil<br />

sediment tiny bits of soil and stone that settle to the bottom of water<br />

sustainable able to be used and conserved for the future<br />

traditional owners the people who lived in a place first<br />

trawling catching animals from the sea using a boat dragging a bag-like net<br />

zoning dividing a place into different areas (or zones) for different activities<br />

31<br />

Macmillan Digital Library: What’s the Issue? Set 2 © Michelle Atkins, Julie Murphy, Greg Reid, Geoff Thompson, Ashten Warfe/Macmillan Publishers Australia 2011 ISBN 978 1 4202 9209 1

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