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10/5 Natural Disruptions

Last updated 9 months ago

6 questions

Note from the author:

You will use this paper and the interactive at https://media.hhmi.org/biointeractive/click/extinctions/

Instructions

You will use this paper and the interactive at https://media.hhmi.org/biointeractive/click/extinctions/

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Question 1

1.

What are the names of the mass extinctions on the horizontal axis of the interactive? How long did each period that preceded the extinction last in years?

Question 2

2.

What is on the vertical axis? (include the unit)

Question 3

3.

What appears to be one criterion that scientists use when defining the timing of geologic periods?

Question 4

4.

Is the line on the interactive graph ever flat? Does it ever reach zero? Explain.

Question 5

5.

Click the info icon for each of the extinction events. Record the environmental factors and the affected species.

Question 6

6.

What would you want to know to help determine if we are in the beginning of a 6th mass extinction?