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Laabri

Grade 7 Science: Unit A: Interactions and Ecosystems: Section 3.0

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Last updated almost 4 years ago
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1.

Why is it important to investigate the distribution of living things? (pg. 51)

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2.

What are some problems if the ecosystem has an imbalance caused by human activity? (pg. 55)

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3.

The figure below shows wetland and dry-land areas in a park. Create a chart with the headings “wetland” and “dry land” to list all the living things you see in each place. Why do you think park naturalists might want to know the distribution of each of these living things in the park?

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4.

Define each of these terms and provide an example of each.

Bioinvasion, Competition, Predation, and Weather.

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5.

Using the information presented in your textbook and from our discussions in class, discuss the relationship between the Lynx and Hare populations. (pg. 60 of hard copy, pg. 59 in digital copy)

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6.

What is depicted in the image below? Describe what this is used for and how it helps scientists.

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7.

How do you think the following factors can affect populations and communities in ecosystems?

a) the introduction of a new species

b) the availability of food