Answer:
The two tasks that a geologist performs are:
* Investigates the formation process of rocks
* Measures earthquakes and tsunamis using seismographs
Step-by-step explanation:
Geologists study the earth and everything that is related to it, they work field covers from the research of how the earth was created and all the ages of it, to how does it react and changes during time. The other sentences are related to other professionals, such as architects, engineers, perhaps sewers. There are only two activities related to the behavior of earth on the list.