Adaptations-- changes in organisms to make them better able to survive in their environment.
Algae-- simple plants that live in water.
Atmosphere-- the invisible blanket of air that surrounds the earth.
Biome-- a major regional community such as the tundra, grasslands, or desert.
Biosphere-- life-sustaining regions of the earth.
Community-- all plants and animals living in the same environment.
Compost-- organic material that decomposes to return nutrients to the earth.
Conservation-- to maintain, restore, or preserve.
Consumer-- an organism that eats a living thing for energy.
Decompose-- to break down into basic elements.
Decomposer-- an organism that gets energy from decomposing materials.
Ecosystem-- communities interacting in their environment and functioning as a system.
Environment-- an organism's total surroundings.
Food Chain-- the order in which food energy is transferred through organisms, from plants to herbivore to carnivore.
Food Web-- a system of interconnecting food chains.
Habitat-- an environment where an organism lives.
Nitrogen-- a basic element found in the air, soil, and all proteins.
Nitrogen Cycle-- the transfer of nitrogen from the atmosphere into the soil and along the food chain.
Nutrient-- something that nourishes, repairs, or promotes growth.
Organic-- derived from a living organism.
Organism-- a living thing.
Oxygen-- the colorless, odorless, tasteless gas produced by plants.
Photosynthesis-- the process by which plants use sunlight, water, and carbon dioxide to produce glucose and oxygen.
Plankton-- drifting microscopic organisms found in water.
Population-- all living things of the same species living in one area.
Predator-- an animal who feeds on other animals.
Prey-- an animal hunted as food.
Producer-- an organism that makes its own food.
Topsoil-- surface soil containing most of the nutrients required for plant growth.
Water Cycle-- the circulation
of the earth's water through evaporation, condensation, precipitation,
and accumulation.
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