Question

put these features from underwater volcanism in order of its lifespan/youngest1 atoll2 seamount.3 guyotoldestprevious

Explanation:

To determine the order, we analyze the formation and evolution of underwater volcanic features:

1. Seamount: A seamount is an underwater mountain formed by volcanic activity. It is the youngest stage as it is an active or recently active volcanic structure.
2. Guyot: A guyot is a flat - topped seamount that has been eroded by wave action and then subsided. It forms after a seamount, so it is older than a seamount.
3. Atoll: An atoll is a ring - shaped coral reef, island, or series of islets. It forms from the subsidence of a volcanic island (after the stages of seamount and guyot) with coral growth over time. So it is the oldest among the three.

Answer:

Youngest: 1. Seamount, 2. Guyot, 3. Atoll (Oldest)