Ecology

4. an animal that primarily eats other animals (meat).
6. a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
9. the scientific study of how living things (organisms) interact with each other and their environment.
11. an organism that regularly consumes both plant and animal matter for energy and nutrients.
14. a community of living organisms (plants, animals and microbes) in a particular area.
18. any individual living thing, ranging from a single-celled bacterium to a complex animal or plant.
19. an organism that cannot produce its own food and instead obtains nutrients from food.
20. an organism, like bacteria or fungi, that breaks down dead plant or animal matter.
22. organisms that create their own food.
23. the part of Earth.
24. an organism that harbors another organism (a parasite) within or on its body, providing it with resources.
25. an organism that feeds on dead or decaying plant and animal matter.

1. the non-living parts of an ecosystem, in contrast to biotic factors, which are living organisms.
2. an organism that lives on or in another organism (the host) and derives benefit from it.
3. an animal that hunts, kills, and eats other animals for food.
5. animals that are killed and eaten by other animals.
7. an animal that primarily eats plants for energy and nutrients.
8. an organism that obtains energy by feeding on other organisms.
10. the whole number of people or inhabitants in a country or region.
12. an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.
13. consists of all the food chains in a single ecosystem.
15. a group of people who share a common characteristic, interest, or location.
16. a step or position an organism occupies in a food chain or food web, indicating how it obtains its energy.
17. the living parts of an ecosystem, as opposed to abiotic factors which are non-living.
21. the natural environment or place where a plant or animal lives.