Food chains and food webs

3. An organism that can produce its own food using light, water, carbon dioxide, or other chemicals
7. An animal that is hunted and killed by another animal for food
10. An organism that kills and eats other animals
11. Organisms that make their own food
12. A bacteria that is commonly found in the lower intestine of warm-blooded organisms
13. An organism that eats other plants or animals for energy and nutrients
15. A relationship in which both species are mutually benefited
18. A relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter
19. The position it occupies on the food chain
20. An organism that only consumes meat or other animals

1. The process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
2. Plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process
4. An organism that eats plants and animals
5. The representation of total living biomass or organic matter present at different trophic levels in an ecosystem
6. An organism that only consumes plants
8. A group of antibacterial drugs that attack a wide range of bacteria
9. Order of events in an ecosystem
14. The process that all living things go through to create the energy they need to live
16. Consists of all the food chains in a single ecosystem
17. Organisms that are too small to be seen without using a microscope