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Unit 3 - Life on Earth

Unit 3 - Life on Earth. Biodiversity and Investigating Ecosystems. Biomes. Biome : are the various regions of our planet as distinguished by their similar climate , fauna and flora . Global distribution of biomes can be influenced by temperature and rainfall .

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Unit 3 - Life on Earth

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  1. Unit 3 - Life on Earth Biodiversity and Investigating Ecosystems

  2. Biomes Biome: are the various regions of our planet as distinguished by their similar climate, fauna and flora. Global distribution of biomes can be influenced by temperature and rainfall. Can you think of any examples of biomes?

  3. Name the biomes... A B D C

  4. Ecosystems All living organisms interact with other living things and their non-living surroundings. We call this interaction an ecosystem. living organisms + non-living = surroundings ecosystem

  5. Soil Ecosystem What’s living? What’s non-living?

  6. Fresh Water Ecosystem What’s living? What’s non-living?

  7. Biodiversity Biodiversity: the variety of species in an ecosystem. Watch Natures Microworlds and see the amazing diversity of life on Earth!

  8. Components of an Ecosystem An ecosystem is made up from different parts: • Habitat • Population • Community

  9. Habitat A habitat is the place where an organism lives.

  10. What habitats are in this ecosystem?

  11. Population In an ecosystem, a group of organisms made of one species is called a population. How many can you get right?

  12. A population of dolphins ...a school of dolphins

  13. A population of sheep ...a flock of sheep

  14. A population of crows ...a murder of crows

  15. A population of lions ...a pride of lions

  16. A population of geese ...a gaggle of geese

  17. A population of ants ...an army of ants

  18. (My fave) A population of hodgehegs ...a prickle of hodgehegs

  19. Community A community is all the living organisms together in an ecosystem. This means that: Community + Habitat = Ecosystem

  20. Find a habitat, a community and a population in this ecosystem

  21. Find a habitat, a community and a population in this ecosystem

  22. Components of an Ecosystem H______ + C_________ = ______________

  23. Identifying Ecosystem Components Glue In: Pond Ecosystem

  24. Think Identifying Ecosystem Components • What are three habitats in this ecosystem? • How do the communities in these habitats differ? • Why are organisms restricted to their habitats?

  25. Biotic and Abiotic Factors Many factors can have an effect on ecosystems. Biotic factors – factors relating to living things, e.g. predation, competition. Abiotic factors – non-living factors which affect an ecosystem, e.g. temperature, pH

  26. Biotic or Abiotic? Light intensity pH Disease Grazing Temperature Predation Moisture Food availability

  27. Biotic or Abiotic?

  28. Research an Ecosystem • You will be allocated an ecosystem card. • Your role is to find out the answers to the questions on the card. • Prepare to produce a team poster about your ecosystem.

  29. One stay, two stray When listening to the presentations, find out; • The temperature and rainfall expected in this ecosystem. • An example of a plant and animal found there. • A human influence affecting that ecosystem.

  30. Why can these birds all live happily on the Galapagos?

  31. Ecological Niche • A nicheis the role an organism plays in its ecosystem. • This includes where it lives and breeds, what it feeds on, and what feeds on it

  32. Did these animals come from one species or two?

  33. What is the best definition of a species? • A group of animals that can interbreed • A group of organisms that can have offspring of their own • A group of organisms that can interbreed to produce fertile offspring • A group of organisms that have characteristics in common

  34. Now try… • Wordbank • WYSK

  35. Bingo! Ecosystem Community Biome Biotic Population Abiotic Ecological Niche Biodiversity Species Habitat

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