Question 4 Leave the rocks submerged in the jars for about 90 minutes. Then use a
spoon to carefully scoop the rocks from the jar labeled 0% Acid. Dry the
rocks by patting, or blotting, them with a soft rag. After the rocks are
dry, measure their mass and record it on the sticky note. Use this
format: "Final Mass: ." Place the jar with the liquid on the counter and
place the dried rocks next to the jar. Repeat this process for the other
three jars. After you have recorded the final mass for each jar, complete
this table.
B
7
U
x?
x х
Font Sizes
A
А
:
✓
0% Acid
33% Acid
66% Acid
100% Acid
Initial Mass (g)
Final Mass (g)

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.