Ecology

3. the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
8. an organism, like bacteria or fungi, that breaks down dead plant and animal matter, recycling nutrients back into the environment
11. a biological interaction where organisms, either of the same or different species, strive for the same limited resources, such as food, water, or territory, leading to a reduction in the fitness of both involved
12. the natural home or environment of an animal, plant, or other organism
13. a visual representation of connected feeding relationships
17. biological community of interacting organisms and their physical environment
18. the process by which energy is relocated from one system to another
20. the maximum number of individuals of a particular species that an environment can sustain indefinitely

1. renewable organic matter derived from plants and animals, which can be used as a source of energy through processes like burning or conversion into biofuels
2. the variety of genes and genetic variations within a population or species
4. the waning of an animal's behavioral response to a stimulus
5. an organism that cannot consume its own food, but gains energy from eating other organisms
6. a way of behaving, thinking, or feeling that is not learned
7. the variety of life in the world or in a particular habitat or ecosystem
9. a colourless, odourless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide
10. an organism that can create its own food
14. a long-term change in the average weather patterns that have come to define Earth's local, regional and global climates
15. an animal that is caught and killed by another for food
16. an animal that kills or eats other animals
19. a hierarchical series of organisms each dependent on the next as a source of food