| A | B |
|---|
| Pyramids | Layered diagram showing feeding relationships in a food chain |
| Number | Type of pyramid you get by counting organisms |
| Biomass | The type of pyramid which always looks pyramid shaped |
| Quicker | Why do people sometimes prefer to work out the pyramid of number rather than the pyramid of biomass |
| Energy transfer | What does the arrow on a food chain show you |
| Sunlight | The source of energy in almost all food chains |
| Organic | Energy containing compounds with carbon and hydrogen in them |
| Excretion | The process where cells get rid of waste and lose a bit of energy |
| Inedible | The parts of an organism you can't eat (even if they contain energy) eg bones, shells, tree trunk |
| Efficient | What a food chain must be if it has lots of levels |
| Consumer | An organism which eats other organisms |
| Producer | Organism at the start of a food chain |
| Photosynthesise | What producers do |
| Short | What a food chain will be like if lots of energy is lost at each stage |
| Trophic level | 'Feeding level' |
| Vegetarian | Someone who eats no meat |
| Inefficient | People who eat meat are this because so much energy is wasted by animals compared with how much energy they contain |
| Factory farming | Agriculture which tries to reduce wasted energy |
| Antibiotics | What some farmers feed to cattle to stop them having to waste energy fighting disease |
| Resistant | What bacteria are becoming because armers feed cattle with unnecessary antibiotics |
| Decomposers | Bacteria and fungi which break down dead things |
| Bacteria | The majority of decomposers which aren't fungi |
| Fungi | The majority of decomposers which aren't bacteria |
| Movement | Factory farmers have pens which stop animals wasting energy by doing this |
| Carbon dioxide | Released into the air by respiration |
| Respiration | Releases carbon dioxide from organic molecules |
| Fossil fuel | What some organic material becomes if it doesn't fully decompose |
| Burning | How you turn fossil fuels into carbon dioxide and water |
| Natural gas | The fossil fuel which isn't coal or oil |
| Photosynthesis | The process which takes carbon dioxide from the air and turns it into sugars |
| Plants | Organisms which take carbon dioxide from the air |
