Which of the following events did not occur during both the mt. st. helens and kilauea eruptions? a. a large magnitude earthquake b. a large landslide-type collapse c. a lateral volcanic blast d. emptying of magma from a buried magma chamber

The right answer is:

A large magnitude earthquake.

Explanation:

The earthquake did not occur during the eruption (that´s the question being made here). The earthquake that struck the northern face of Mount St. Helen on May 18, 1980 triggered both the largest landslide in recorded history and the volcanic eruption. No earthquake is associated with the event of the Kilauea.

the wrong statement is - c. a desert had more biodiversity than a marsh.

the deserts are one of the places of the planet where there's the least biodiversity. the reasons for that are the climate and the lack of food sources, which hampers both the number of the species that can survive in it, and the number of the individuals in the species itself.

the marshes, on the other hand, are places where there's perfect conditions for lots of organisms to thrive. the temperature is moderate and nice, the amount of water and the food sources are on a high level, so there's an abundance of both plant and animal life in them.