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Opener. You have a slip of paper that is only half of an idea. You need to find the other half of your idea. As you meet people, listen to what they have and discuss what the overall topic might be. Answers. An Alligator drifts into a weedy Florida river………………

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  1. Opener • You have a slip of paper that is only half of an idea. You need to find the other half of your idea. As you meet people, listen to what they have and discuss what the overall topic might be.

  2. Answers • An Alligator drifts into a weedy Florida river……………… • …………..….. watching a long, thin fish called a gar. • The biotic part of an environment is all ……………… • ………………..of the organisms that live together and interact with one another •  At first glance, the environment may seem disorganized…… • ….To ecologists, the environment can be arranged into different levels. • The population is a group of individuals of the same species whereas…… • …………. a community consists of the populations of different species that live and interact in an area

  3. Everything is Connected

  4. Ecology • The study of interactions between organisms and their environment.

  5. Environment • An organism’s environment is anything that affects the organism. • Two parts • Biotic: all of the organisms that live together and interact with one another • Abiotic: includes all of the physical factors such as water, soil, light and temperature – that affect organisms living in a particular area.

  6. What are the abiotic and biotic factors in the environment below?

  7. Five Levels of Environmental Organization • The individual organism

  8. 2. Population: a group of individuals of the same species that live together in the same area at the same time.

  9. 3. Community: consists of all of the populations of different species that live and interact in an area.

  10. 4. Ecosystem: a community of organisms and its abiotic environment.

  11. 5. Biosphere: part of the Earth where life exists. • Extends from the deepest part of the ocean to very high in the atmosphere, where tiny insects and plant spores drift and it includes every ecosystem.

  12. All five levels of organization in an ecosystem.

  13. Quick Check • What is ecology? • Describe an ecosystem and give two examples of biotic and abiotic factors • What is the difference between population and community?

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