Explain how continental islands, high islands, and low islands form
Continental islands are islands situated on continental shelves or are fragments that have been broken off of a continent.
Most high islands are the result of volcanic eruptions.
The low islands are made of coral, a material composed of the skeletons and living bodies of small marine organisms that inhabit tropical seas.
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Approximately how much higher is our current ecological footprint then the estimated long-term ecological capacity of the Earth?
A. 1/3 B. 1/2 C. 1/4 D. 3/4
Which of the following factors indicates a high risk for volcanic mudflows or lahars?
A) A shield volcano that forms a low mountain in the tropics B) A volcano whose hillslopes are covered with hard basaltic lava C) A volcano with a thick covering of snow or ice D) All of these are correct.
What are seaweeds? What are the classifications of seaweeds? What will be an ideal response?
A secondary rainbow
A) is always brighter than a primary rainbow. B) produces a color pattern that is the same as a primary rainbow. C) is more likely when the Sun is straight over head, or nearly so. D) requires that light be reflected twice within a raindrop. E) all of the above