What kind of system do we have of using resources and what nickname is often applied to this?

What kind of system does nature use and what other word for this is there?

Name four examples of ecosystems.

What effect does energy have on closed-loop and linear systems?

Name two examples of waste materials from microorganisms that are then taken up by plants?

What group of people still live a closed-loop lifestyle?

What are things that used to be part of a living organism called?

What is released by some microorganisms to break down DOM?

What three things do different kinds of bacteria do to nitrates/nitrogen?

What two carbohydrates do bacteria break down?

What is the transfer of pollen called?

What other word is there for bumblebees?

What is an area that renews itself and doesn't change called?

Name three ways in which ecosystems often aren't perfect closed loops.

What are life-support systems that we depend upon for our survival called?

In what four ways does the forest above Mexico City help regulate water and what happened that effected this?

What new method is there of protecting earthworms whilst planting new crops?

Earthworms are incredibly useful creatures. In what five ways do they help make soil fertile?

If a substance doesn't rot, what is it called?

What two effects can plastics that end up in the sea have?

What are poisonous chemicals called?

What material has been liked to birth defects and cancer in humans?

What is it called when chemicals are passed up the food chain and how does it work?

What is plant and animal material and waste that can be used as a fuel called?

What two reasons are there why human waste is very rarely used as fertiliser?

Describe and name what happens when nutrients from non-organic fertilisers flow into lakes.

What is crop rotation?

What does clover have in it's roots and what kind of crop is it?

What is the Californian system of producing almonds called?

Name four of the problems with the system California has for producing almonds.

What system is in place for North Sea cod but what five problems does this cause?

Why do fishing bans have to be set now, rather than when the stocks have crashed?

What is it called when dry land becomes a desert?

What five techniques have the local people living in the Sahel dry-zone developed to avoid desertification?

What's happening in the Sahel area right now?

Why do want to conserve seeds in the Sahel area?

What are forests that have never been cut down called?

Why five reasons are there for forests to be cut down?

What nine problems does cutting down the forests cause?

What possible solution is there to illegal and unsustainable timber production?

What is it called, when a forest stores carbon in it's trees?

What is sunlight stored as chemical energy in a fossil fuel called?

What happens when carbon dioxide dissolves in water?

What two things mean we can't rely on traditional farming methods?

What is it called when an object becomes a material for another product?