Exam revision

4. Animals that only eat plants.
6. The fuel that is used for nuclear power.
8. The third step in the water treatment plant.
9. When pollutants poisen the water so that nothing can live in it.
12. An advantage of using solar and wind energy.
13. pollutants that do not dissolve in water.
16. Animals that only eat meat.
18. Energy is measured in this unit.
21. Competition between members of different species.
24. A relationship between two living organisms which may or may not be beneficial.
26. These produce thheir own food using a process called photosynthesis.
27. What we call a third level carnivore.
29. The step in the water treatment plant where chlorine is added to kill surviving germs.
31. When two or more cells are connected we call it a?
32. Competition between members of the same species.
35. In this relationship the host is harmed while the other benefits.
38. when electricty cannot pass through a material we call it an?
39. Athletes foot is an example of this type of infection.

1. The purification process of pouring water through a funnel and paper to remove pollution.
2. Changes in how an individual animal or a society do things in their daily lives.
3. Instead of drawing pictures for circuits we use?
5. This disease uses a snail as a host for part of its life cycle.
7. An example of a soluble pollutant.
10. When a pathway of electricity is closed we say it is?
11. A type of physical adaptation.
14. An interaction between two or more species where each has a net benefit.
15. When a pathway of electricity is open we say it is?
16. The relationship between humpback whales and barnacles.
17. A chemical that is added to water to kill germs.
19. When electricity can easily pass through a material we call it a?
20. When people keep getting sick from a water source it is called what cycle?
22. A bacterial disease causing severe diarrhoea and dehydration, usually spread in water.
23. A community or group of living organsisms that live in and interact with each other in a specifc environment.
25. In predation the predator is referred to as this.
28. Worms and bacteria are examples of these.
30. Adaptations to an animals body.
33. Who is in charge of making sure citizens get clean water.
34. Power is measure in this unit.
36. Dysentry causes the intestines to become?
37. One of the most effective ways of purifying water.