Ecosystems

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Ecosystems

  1. 1. Ecosystems T- 1-855-694-8886 Email- info@iTutor.com By iTutor.com
  2. 2. What is an ecosystem? • An ecosystem is made up of a group of living things and their physical surroundings. • The living and nonliving parts of an ecosystem work together like a team.
  3. 3. Photosynthesis and energy • Sunlight is almost always the first type of energy to enter an ecosystem. • When another living thing in an ecosystem eats a plant, it is gaining energy that came first from the Sun.
  4. 4. Photosynthesis and energy • A plant uses the Sun’s energy to turn water and carbon dioxide into useful molecules such as sugars and starches.
  5. 5. Producers, consumers, and decomposers • A producer is a living thing, like a plant, that can take the Sun’s energy and store it as food.
  6. 6. Producers, consumers, and decomposers • A consumer must feed on other living things to get food and energy. – A herbivore is a consumer that eats only plants. – A carnivore is a consumer that eats only animals. – A consumer that eats both plants and animals is called an omnivore.
  7. 7. Producers, consumers, and decomposers • A decomposer is a living thing that consumes waste and dead organisms to get energy. • Decompose means “to break down”.
  8. 8. The water and carbon-oxygen cycles • Living things need water and sunlight. • Nature allows water to recycle so it can be used in many ecosystems. • Water supply depends on the water cycle.
  9. 9. • The carbon-oxygen cycle describes how the ecosystem uses these important elements. The water and carbon-oxygen cycles
  10. 10. What is a food chain? • A food chain shows how each member of an ecosystem gets its food. • A simple food chain links a producer, an herbivore, and one or more carnivores. Which is the carnivore?
  11. 11. Energy and food chains • A diagram in the shape of a pyramid is a good way to show how energy moves from one feeding level to the next in a food chain.
  12. 12. Food webs • Most animals are part of more than one food chain. • We can connect many food chains to form a food web.
  13. 13. The End Call us for more Information: www.iTutor.com Visit 1-855-694-8886

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