Ecology and the environment

2. An organism is ________ if it makes its own food.
5. A ______ ______ shows how energy is moved from one organism to another as a result of feeding.
6. The ___ is the original source of energy for an ecosystem.
7. A sampling square.
10. The total mass of organisms
11. The place where an organism lives. Must provide a source of food, water and shelter for the organism.
13. Animals that eat plants or other animals.
14. An organism that only eats plants.
18. The scientific study of the interactions between organisms and their surroundings.
20. Large areas of the Earth dominated by a specific type of vegetation.
21. The different stages in a food chain.
24. Organisms that break down dead material and help to recycle nutrients.
28. All the organisms of a particular species found in an ecosystem at a certain time.
29. Factors in an ecosystem that limit the population size if there is too much or too little of it.

1. An organism tat lives in another organism and gets its nutrition from the host.
3. An organism that only eats meat.
4. Plants which photosynthesise to produce food.
8. Non-living, physical factors in the ecosystem that may influence an organism or a system.
9. A group of the same type of organisms that are able to reproduce and produce fertile offspring.
12. _______ is a way of transferring energy between organisms.
15. An organism that eats both plants and animals.
16. The arrows in a food chain show the direction of _____ flow.
17. The amount of variation shown by species in an ecosystem is the ecosystem's ________.
19. A ____ ___ shows multiple food chains. It is more complex and realistic.
22. Energy is lost from an ecosystem through __________.
23. The population of all species found in an ecosystem at a particular time.
25. An animal that kills and eats another animal.
26. The offspring of two plants or animals of a different species. Cannot reproduce/infertile.
27. Living components of an ecosystem.