Across
- 3. The specific environment in which an organism lives, characterized by its physical and biological features.
- 5. level: A hierarchical level in a food chain or food web, consisting of organisms that share the same function in the food chain and the same nutritional relationship to primary sources of energy.
- 7. factor: Living components of an ecosystem, including plants, animals, fungi, bacteria, and other microorganisms.
- 9. A large-scale ecological region characterized by distinct plant and animal communities adapted to the prevailing climate and other environmental conditions.
- 13. An organism, typically a plant or photosynthetic microorganism, that produces organic compounds (usually through photosynthesis) using energy from sunlight or inorganic compounds.
- 14. factor: Non-living components of an ecosystem, such as temperature, sunlight, soil, water, and nutrients.
- 16. web: A complex network of interconnected food chains that illustrates the flow of energy and nutrients through an ecosystem, involving multiple organisms at different trophic levels.
- 19. density: The number of individuals of a species per unit area or volume in a population.
- 21. A type of symbiotic relationship in which both species benefit from the interaction.
- 22. pyramid: A graphical representation of the trophic structure of an ecosystem, showing the flow of energy from one trophic level to another, with energy decreasing at higher trophic levels.
- 24. An organism that obtains energy and nutrients by consuming other organisms or organic matter.
- 25. The scientific study of the interactions between organisms and their environment, including both biotic (living) and abiotic (non-living) components
Down
- 1. A type of symbiotic relationship in which one species (the parasite) benefits at the expense of the other (the host).
- 2. The variety of life forms (species diversity), genetic diversity, and ecological diversity present in a given area or on Earth as a whole.
- 4. The total mass of living organisms in a given area or ecosystem at a specific time.
- 6. A close and long-term biological interaction between two different species.
- 8. A group of different species living and interacting with each other in a specific area or habitat.
- 10. curve: A graphical representation of the number of individuals surviving at each age in a population over time, often categorized into three types: Type I, Type II, and Type III, reflecting different patterns of survivorship.
- 11. niche: The role and position of an organism within its environment, including its habitat, its interactions with other organisms, and its utilization of resources.
- 12. An organism that obtains organic carbon and energy by consuming other organisms or their remains.
- 15. A biological community of interacting organisms and their physical environment, including both living (biotic) and non-living (abiotic) components.
- 17. A type of symbiotic relationship in which one species benefits while the other is neither helped nor harmed.
- 18. cycle: The cycling of chemical elements and compounds between living organisms, geological processes, and the atmosphere, hydrosphere, and lithosphere.
- 20. An organism that produces its own food (organic compounds) using energy from sunlight (photosynthesis) or from inorganic compounds (chemosynthesis).
- 23. An organism, usually a bacterium or fungus, that breaks down and feeds on dead organic matter, returning nutrients to the environment.