Across
- 4. a transitional area of vegetation between two different plant communities, such as forest and grassland.
- 6. Moving or having the power to move spontaneously
- 12. An organism that obtains nourishment and shelter on another organism.
- 13. A form of competition in which individuals of the same species compete for the same resources in an ecosystem
- 15. An organism that cannot manufacture its own food by carbon fixation and therefore derives its intake of nutrition from other sources of organic carbon, mainly plant or animal matter.
- 16. A large community of living organisms (plants, animals and microbes) in a particular area. The living and physical components are linked together through nutrient cycles and energy flows.
- 17. Capacity The maximum population size of the species that the environment can sustain indefinitely given the food, habitat, water, and other necessities available in the environment.
- 19. A kind of animal that eats either other animals or plants.
- 20. The variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species, and of ecosystems.
- 21. A group or association of populations of two or more different species occupying the same geographical area and in a particular time
Down
- 1. The way in which an organism fits into an ecological community or ecosystem.
- 2. A factor created by a living thing or any living component within an environment in which the action of the organism affects the life of another organism, for example a predator consuming its prey.
- 3. An interaction between organisms or species in which both the organisms or species are harmed. Limited supply of at least one resource (such as food, water, and territory) used by both can be a factor.
- 5. Inability to move
- 7. The type of natural environment in which a particular species of organism lives. It is characterized by both physical and biological features.
- 8. A form of competition in which individuals of different species compete for the same resources in an ecosystem
- 9. An organism capable of synthesizing its own food from inorganic substances, using light or chemical energy.
- 10. any animal or other organism that hunts and kills other organisms, primarily for food.
- 11. A large community of plants and animals that occupies a distinct region
- 14. A group of organisms of one species that interbreed and live in the same place at the same time
- 18. Any group of species that exploit the same resources, or that exploit different resources in related ways.