16. which of the following is not an accurate indication that a volcano is about to erupt?
a. ground deformation of volcano
b. increased emission of gases
c. presence of tremors
d. drying of soul of plants
17. which of the following things should be refrain from doing if you were about to evacuate during a volcanic eruption?
a. carrying at least two weeks supply of perception medicine
b. leaving the main power switch on and the house often
c. bringing essential items and an emergency supply kit
d. wearing a mask and goggles when there is an ash fall.
18. a composite volcano that erupted continuously for two hours is accompanied by a tropical storm what would like to happen in the scenario?
a. lava will react to water producing sulfuric acid affection the ozone layer
b. the volcano will continue to fill out cinders and ash can larger volume
c. Lahar will form and will load the area surrounding the volcano
d. the tropical storm will become stronger and the flood will occur.
19. which of the things can provide clues in studying Earth's inner layer?
a. Volcanic debris tremors
b. temperature of nearby body of water
c. intensity of tremors
d. vegetation surrounding the volcano​