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Science Lesson 3

Science Lesson 3. Today’s Objective. YOU will be able to describe how organisms compete within an ecosystem. Let’s start with the introduction of new vocabulary. Competition: . The struggle among organisms for limited resources in an area. Population Density:.

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Science Lesson 3

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  1. Science Lesson 3

  2. Today’s Objective • YOU will be able to describe how organisms compete within an ecosystem.

  3. Let’s start with the introduction of new vocabulary

  4. Competition: • The struggle among organisms for limited resources in an area.

  5. Population Density: • A measure of a population’s size in relation to the size of the area in which the population lives.

  6. Limiting Factors: • A factor that causes population growth to decrease.

  7. When looking at competition in an ecosystem, limiting factors can make a huge difference. In the next few slides, we are going to look at some of those factors.

  8. Deforestation: • To cut down and clear away the trees and forests. • This includes over-fishing and over-hunting

  9. Predation: • The capturing of prey as a means of maintaining life.

  10. Natural Disasters: • Hurricane, tornado, flood, severe drought • Equally devastating to populations regardless of size

  11. Scale of Understanding • Using your scale of understanding, please point the number showing your level of understanding answering the following question: • *How well can you describe how organisms compete within an ecosystem*

  12. Now, please get out your science text books and turn to page 88.

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