The environment

• Photosynthesis


  The process by which green plants and some other organisms use sunlight, carbon dioxide and water to create oxygen and energy-rich compounds such as glucose
• Photosynthesis


  1. Plants take in carbon dioxide

  2. Plants take in water

  3. Plants use sunlight

  4. Plants produce oxygen

  5. Plants produce glucose
• Chlorophyll is the green pigment in plants that allows photosynthesis to occur
• Photosynthesis is an essential process that produces food and oxygen
• Food chain


  A linear network of links in a food web starting with producer organisms (e.g. grass or algae) and ending at a top predator species (e.g. grizzly bears or orca)
• Food chain


  • Grass -> Grasshopper -> Bird -> Bear
• Food web

  A system of interconnected and overlapping food chains in an ecosystem
• The pyramid of numbers shows the relative numbers of each organism in a food chain or food web
• The pyramid of biomass shows the relative sizes/masses of each organism in a food chain or food web
• Environment

  The surroundings or conditions in which a person, animal, or plant lives
• Habitat


  The natural home or environment of an animal, plant, or other organism
• Adaptation


  The adjustment of a sense organ to the intensity of a stimulus
• Estimating population of species in a meadow


  1. Use quadrats

  2. Count number of organisms in each quadrat

  3. Calculate average number per quadrat

  4. Multiply average by total area of meadow
• Conservation is the protection of plants, animals, natural areas, and important structures from the damaging effects of human activity