This feature occurs in an area where water is heated under ground to the point of boiling. when the water and steam build, they finally rise through a vent on the surface, spraying water and steam high up into the air. this feature is a
a. hot springs
b. geyser
c. volcanic neck
d. volcanic eruption

The correct answer is - B. Geyser.

The geysers are a well known and attractive feature that can occur in close proximity of an existing volcano, or as a post-volcanic feature. It has scorching hot water, that is pumped up in the air by the pressure from bellow. There geysers in multiple places around the world, and they are considered as tourist attractions, and one of the most famous are the geysers in the Yellowstone National Park in the northwestern part of the United States, and the geysers in the island country of Iceland in the North Atlantic.

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.

7.03-1.70=5.33 and 6.80+5.09=11.89 and 5.5-3.01=2.49