Brittle stars employ a unique evasive technique that involves detaching an arm if grabbed by a
predator. Indicate whether the statement is true or false.
ANS: T
This technique is why they are called brittle stars. They are able to regenerate the arm once it is lost.
Information can be found in the section Advanced Invertebrates Have Complex Bodies and Internal
Systems.
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The theory of continental drift was developed using the theory of plate tectonics.?
a. True b. False
Which of the following scales can define the "size" of earthquakes
a. The Intensity Scale b. The Hardness Scale c. The Magnitude Scale d. The Damage Scale e. Both a and c
When waves approach headlands they ________.
A. shallow and deepen simultaneously B. refract, focusing energy C. contract, releasing tidal energy D. fan out, becoming less dense E. dissipate and lose energy
Describe the characteristics of the “3.9 – 9.2%g (% of the acceleration of gravity)” Peak Acceleration class.
Earthquakes are one of the biggest natural disaster risks in some parts of the world. In this exercise you will add the USA Earthquake Risk layer to your map and assess the earthquake risk in several areas. Find the USA Earthquake Risk layer by selecting “Add” then “Browse Living Atlas Layers.” Next select “Landscape” then “Ecology” and “USA Earthquake Risk.” Add the layer to your map by clicking “Add layer to map (as layer).” In the Content window on the left side of the screen, click on the ellipses below the layer name and then select “Show item details.” A new screen should appear in your web browser that describes the dataset in the Description and Dataset Summary sections. If more information about the dataset is desired, users can click on “Link to source metadata” toward the bottom of the page. Answer the question about the dataset.