Terms: (Matching B Multiple Choice R True/False) 2 know all Weather Population Density: Climate Density-dependent limiting factors: Low-pressure system Density-independent limiting factors: High-pressure system Ecology: Ecosystem Abiotic: Biodiversity Biotic: Biome Community: Niche Natality: Autotrophs Mortality: Heterotrophs Immigration: Producers Emigration: Primary consumers Extinct: 2^nd level consumer, 3^rd level consumer Endangered: Carnivore Extirpated Omnivore Threatened: Herbivore Bioaccumulation Decomposer Biomagnification Population: Evaporation Limiting Factor: Condensation Carrying Capacity: Precipitation

**Matching:*** **Weather:** The short-term state of the atmosphere at a particular time and place.* **Climate:** The long-term average weather conditions in a particular region.* **Population Density:** The number of individuals of a species per unit area or volume.* **Density-dependent limiting factors:** Factors that limit population growth more strongly as population density increases (e.g., competition, disease).* **Density-independent limiting factors:** Factors that limit population growth regardless of population density (e.g., natural disasters, weather events).* **Low-pressure system:** A weather system associated with rising air, often bringing clouds, precipitation, and unsettled weather.* **High-pressure system:** A weather system associated with sinking air, often bringing clear skies and calm weather.* **Ecology:** The study of the interactions between organisms and their environment.* **Ecosystem:** A community of organisms and their physical environment interacting as a system.* **Abiotic:** Non-living components of an ecosystem (e.g., temperature, sunlight, water).* **Biodiversity:** The variety of life in a particular habitat, ecosystem, or the world.* **Biotic:** Living components of an ecosystem (e.g., plants, animals, fungi).* **Biome:** A large geographic area characterized by specific climate conditions and dominant plant and animal life.* **Community:** All the populations of different species living and interacting in a particular area.* **Niche:** The role an organism plays in its environment, including its interactions with other organisms and its use of resources.* **Natality:** The birth rate of a population.* **Mortality:** The death rate of a population.* **Immigration:** The movement of individuals into a population.* **Emigration:** The movement of individuals out of a population.* **Extinct:** A species that no longer exists anywhere on Earth.* **Endangered:** A species at high risk of extinction in the near future.* **Extirpated:** A species that no longer exists in a particular area but still exists elsewhere.* **Threatened:** A species likely to become endangered in the near future.* **Bioaccumulation:** The gradual accumulation of substances, such as pesticides or other chemicals, in an organism.* **Biomagnification:** The increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain.* **Population:** A group of individuals of the same species living in the same area at the same time.* **Limiting Factor:** Any factor that restricts the size of a population.* **Carrying Capacity:** The maximum population size that an environment can sustainably support.* **Autotrophs:** Organisms that can produce their own food using energy from sunlight or inorganic chemicals (e.g., plants). Also known as producers.* **Heterotrophs:** Organisms that obtain energy by consuming other organisms (e.g., animals, fungi). Also known as consumers.* **Producers:** Organisms that produce their own food through photosynthesis or chemosynthesis.* **Primary consumers:** Herbivores that eat producers.* ** level consumer, level consumer:** Carnivores or omnivores that eat other consumers.* **Carnivore:** An animal that primarily eats other animals.* **Omnivore:** An animal that eats both plants and animals.* **Herbivore:** An animal that primarily eats plants.* **Decomposer:** Organisms that break down dead organic matter and recycle nutrients back into the ecosystem (e.g., bacteria, fungi).* **Evaporation:** The process of liquid water changing into water vapor.* **Condensation:** The process of water vapor changing into liquid water.* **Precipitation:** Any form of water that falls from the atmosphere to the Earth's surface (e.g., rain, snow, hail).This provides definitions for all the terms listed. You can use these definitions to create your own multiple-choice, true/false, or matching activities.