"Decomposing leaves found on forest floor"

"A community of plants and animals and their non-living environment."

"Where something is located"

"The height above sea level"

Ecosystem with temperatures between 30 and 35 degrees, and unpredictable rainfall

Ecosystem with permafrost.

"A stock or supply of something that is useful to people."

"The part of the Earth and its atmosphere which is capable of supporting life."

"The act of overusing natural resources"

"A resource that will eventually run out."

"The movement of water between the atmosphere, the oceans and land."

"Land which is not intensively farmed. Found in upland areas of the UK and has acidic soils. There is only little vegetation."

"Lowland areas, usually in open countryside, where there are lots of small plants/shrubs, such as heather."

"Broad-leaved trees which lose their leaves in the autumn and regrow them in the spring."

"Trees which stay leafy all year round."

"Low-lying land that is wet and boggy."

"The breeding of fish in pens under controlled conditions."

"When plants start to establish in an area"

"Physical, non-living environment, such as water, wind, oxygen."

"Something that was once living."

"The amount of weight of living or recently-living organisms in an area."

"The movement of organic and inorganic material into living matter."

"A series of steps by which energy is obtained and used by living organisms."

"A network of food chains by which energy and nutrients are passed from one species to another."

"The number of species present in an area."

"The growth of algae on water due to the increase in chemical fertilisers being used on the land."

"The growing of one crop on large areas of land."

"Too many people living in one area for the area to support it."

What does NGO stand for?

What is an NGO?

"A permit which allows the holder to emit one ton of carbon dioxide."

"Travel to natural areas that does no damage, conserving the environment and improving the well-being of local people."

"Deciduous trees which lose their leaves in winter."

"The planting of trees in an area that has not been forested before."