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LIVING SYSTEMS

LIVING SYSTEMS. ECOSYSTEM. An environment that contains living & non-living things. A healthy ecosystem has a balance of space, resources and living things. COMMUNITY. The living part of the ecosystem. Organisms are dependent on one another. Energy is passed from one organism to another.

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LIVING SYSTEMS

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  1. LIVING SYSTEMS

  2. ECOSYSTEM • An environment • that contains living & non-living things. • A healthy ecosystem has a balance of space, resources and living things.

  3. COMMUNITY • The living part of the ecosystem. • Organisms are dependent on one another. Energy is passed from one organism to another.

  4. POPULATION • The number of one type of organism.

  5. HABITAT – “Home” • The place an animal/plant naturally live. • It provides food, water, shelter & space. • The size of the habitat depends on the organism’s needs.

  6. ADAPTATIONS • • Organisms have structural adaptations, or physical attributes, that help them meet a life need. *FUR *SHARP TEETH • • Organisms also have behavioral adaptations, or certain types of activities they perform, which help them meet a life need. • *When deer feel that trouble is near, they turn their tales up to show white fur.

  7. Animal Behavior • Behavior is the way a living thing acts. • A stimulus brings about a behavior. • A response is how the living thing reacts. • Inborn Behavior- • Behavior you have without being taught (instincts) • Birds fly south before winter • Reflex is a simple, automatic behavior controlled by nerves. • Blinking • Learned Behavior- • Behavior you have to be taught • Combing your hair, riding a bike and catching a ball.

  8. NICHE • A niche is the function that an organism performs in the food web of that community. • A niche also includes everything else the organism does and needs in its environment. • No two types of organisms occupy exactly the same niche in a community. • During its life cycle, an organism’s role in the community — its niche — may change. • *For example, what an animal eats, what eats it, and other relationships will change.

  9. What do they eat? CARNIVORE -eats only other animals (consumers) • HERBIVORE • -eats only plants (producers) OMNIVORE -eats plants & animals (producers & consumers)

  10. What makes an ecosystem? CONSUMER -eat producers • PRODUCER • -makes their own food 2nd CONSUMER -eat other consumers DECOMPOSER -feed on dead producers and consumers, and wastes.

  11. A FOOD WEB is the flow of energy & materials through FOOD CHAINS that are connect

  12. Parasite & Host • Parasite- is an animal that is helped by living with the animal it harms • Host- is the animal that is harmed by the parasite. • Example- • Fleas live on dogs. The flea is the parasite and the dog is the host. The flea takes blood for the dog.

  13. Parents • Parents give their young: • Food • Protection • Warmth • Parents need to keep babies warm because their smalls bodies lose heat quickly. Some animals are born without fur or feathers.

  14. How do you care for the young? • Animals go through changes called life cycles. • Some animals DO NOT need care: • Sea turtles, butterflies, and tadpoles • Some animals DO need care: • Cats, dogs, rabbits, birds, and horses.

  15. How Animals Live Together • Symbiosis- a special way that animals live together • They are benefited by each other. • EXAMPLE- • Birds stay near buffalo and eat insects. The buffalo are helped because the birds remove insects.

  16. People and the Ecosystem • Humans can have a major impact on ecosystems. • Population- the amount of people • *Rural versus Urban* • Pollution- harmful substances are added to the Earth’s water, air and land. Smoke and Smog Oil Spills Acid Rain

  17. How Can We Help? • Don’t waste electricity • Reduce Waste • Recycle Trash • Reuse Products • Name 1 thing you can do to help:

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