What can scients use to predict volcanic eruptions? Select all that apply. Monitoring earthquakes, ground swelling, and water indicators

Determining if the volcano is active or not

Increase in sulfur dioxide emissions

Tracking surface temperatures of craters​

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.