Essential Question: How do biotic and abiotic factors influence the size and stability of populations that exist in specific ecosystems?

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1 Essential Question: How do biotic and abiotic factors influence the size and stability of populations that exist in specific ecosystems? Monday & Tuesday Students will learn what an ecosystem is, and how the living organisms use their environment to survive. Wednesday (9/2) Students will learn what environmental features include giving multiple examples in different areas of the world. Thursday (9/3) Students will learn about interdependence between abiotic and biotic factors are and how abiotic factors support life. Friday (9/4) Students will use what they learned this week to write a story. 1

2 Silent 5 Silent 5 Question: List 5 Non living things (abiotic factors) that living things (biotic factors) need to survive. water sunlight oxygen Temperature Soil 2

3 Read the bottom of page 7 (Biotic Factors) and page 8 (Abiotic Factors). 3

4 Explain why the 5 abiotic factors listed on page 8 are needed for biotic factors (living things) to survive. Use the chart below to help organize your thoughts. Abiotic Factor Biotic Factor How does the abiotic factor help the biotic factor survive? Water Prairie Dog drink water to live Sunlight Plants (Producers) photosynthesis (plants make their own food) Oxygen Humans to breathe Temperature Tiny Lizards cold blooded need heat to survive Soil Bacteria provides home and uses the nutrients 4

5 9 Look at the list below. In the second column, tell whether the Item listed is a Biotic or an Abiotic Factor. Items Badger Biotic or Abiotic Biotic Sunlight Turtle's Shell Plants Insects Soil Temperature Lizards Sunlight Abiotic Biotic Biotic Biotic Biotic (dirt is abiotic) Abiotic Biotic Abiotic 5

6 Pond Ecosystem What Biotic Factors Exist in the Pond? (turn and talk) Flies Fish What abiotic factors exist in this pond? (turn and talk) Water Sun 6

7 Ecology Lesson Three Interdepency of Biotic and Abiotic Factors.notebook September 03, 2015 What abiotic factors does the weeping willow tree need to survive? (turn and talk) Water Oxygen Soil (dirt) Sun 7

8 What would happen to the Prairie Ecosystem if the average temperatures increased 20 degrees celsius throughout year? (T & T) The organisms would die because the producers (plants) would dry up and not provide food for the first level consumers (herbivores) so all levels of the food chain would starve. 8

9 Application (On Your Own Work) 1. Using your Ecosystem Posters you completed earlier in the week, go back and color code the abioitc and biotic factors listed on your poster. Be sure to provide a key so learners can clearly identify the factors. 2. List 3 examples from nature that describe how biotic and abiotic factors work together to provide a healthy ecosystem. If your feeling super confident, you may attempt to supply 5 examples that exist in a complex ecosystem. Key Biotic = B Abiotic = A Example: Plants (biotic) use the energy from the sun (abiotic) to produce their own food (photosynthesis). 9

10 Application Rubric Item Total Points Self Score Teacher Score 5 Abiotic Factors Clearly Labeled 5 Biotic Factors Clearly Labeled 3 Examples that describe how biotic and abiotic factors work together in an ecosytem

11 Gallery walk: Once you finish your Application Work and you have used the Rubric to make sure you completed ALL sections, Walk around the room and look at each group's poster. Notice all of the BIOTIC and ABIOTIC Factors that are listed!! 11

12 2 Wrap Up Essential Question: How do biotic and abiotic factors influence the size and stability of populations that exist in specific ecosystems? Wednesday (9/2) Students will learn about interdependence between abiotic and biotic factors are and how abiotic factors support life. Can you explain how biotic and abiotic factors work together to sustain an ecosystem? (T & T) 12

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16 Show examples of ecosystems. 16

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