kaylas crossword

4. - a form of symbiosis in which one organism helps the other organism, but there is no benefit or harm done in return
5. Explosion is the rapid increase in population in developing countries causing famine
7. Magnification is the accumulation in body tissues of certain chemicals
9. Factors- living factors e.g. amount of food, predators, parasites, competitors
10. Species are species of plants or animals that have migrated or been brought to Australia
11. Energy from windmills can be used to generate electricity by turning turbines in the same way
13. - The Biosphere is the collective interaction of all the biomes on the Earth.
15. the relationship in which one organism that hunts and eats another
16. Rain - When gases such as sulphur dioxide and nitrogen oxides react with water
18. – the study of the interrelationships of living organisms and their environment.
19. and Tidal Power can be used to generate electricity from the rise and fall of the waves and the tides

1. change allows of sunlight to reach the earths surface
2. - all the organisms in a particular area at a given time
3. Pollution - Air pollution is the release into the atmosphere of excessive amounts of harmful gases
4. - a relationship where two types of organisms compete for the same resource
6. Web - a network of interrelated food chains in a given areas
7. - the total dry weight of the organisms in a level
8. energy is energy harnessed in areas of the earth that are near volcanoes or hot springs
12. – people that make the things (eg; fruits )
14. - a plant eater
17. - A cycle shows the reusing of certain elements and compounds (e.g. water, carbon, oxygen, nitrogen, phosphorus) in different forms in ecosystems.