Which of the following are associated with composite volcanoes? I. They result in explosive eruptions. II. They eject pyroclastic materials. III. Pyroclastic materials and ashes accumulate near the vent, forming layers. Select the correct answer using the code given below.

  1. A. I and II only
  2. B. II and III only
  3. C. I and III only
  4. D. I, II and III

Correct Answer: D. I, II and III

Explanation

Composite volcanoes (stratovolcanoes) are characterized by explosive eruptions that eject pyroclastic materials and ashes, which accumulate in alternating layers near the vent.

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