Earthquakes, volcanic eruptions, the alteration of rock layers by tectonic forces, and mass extinctions are known as
a. beds
b. fossils
c. events
d. stratums

[fw.02]diana is studying four surface features of florida. she classifies the surface features and places them in different columns of a chart as shown below. surface features column 1 column 2 hot springs sinkholes caverns geysers which of these titles best represents column 1 of diana's chart? formed by freezing groundwater o formed by heating groundwater o formed by evaporation of groundwater o formed by chemical action of groundwater