While on vacation, you visit a local Imax theater and see a movie about cave diving in the Yucatan Peninsula. In one of the caves, which is currently filled with water,
you notice the divers swimming past some stalactites and stalagmites. If the water table is now above the level of the ceiling of the cave, what does the presence of the cave decorations indicate about past water table levels?
A) The water table was much higher, and the increased water brought in extra material to form the decorations.
B) The water table was much lower, and the features were formed by water dripping from the ceiling into an air-filled chamber.
C) The water table has always been at that level and the cave decorations formed through the fracturing of the ceiling.
D) The water table has always been high, but molten material was able to extrude underwater.
Answer: B
You might also like to view...
When the climax community appears,
A) biodiversity increases. B) the total energy fixed exceeds the energy used by respiration. C) K-selected species become increasingly favored over r-selected species. D) All of these happen.
Critical Thinking
Building the dirt road in the accompanying figure could be seen by some as a benefit. List three potential benefits building a dirt road in an area such as this.
What will be an ideal response?
Despite its vast size, the ocean will likely not be able to provide enough food to alleviate future malnutrition and
starvation in the world. a. True b. False
Streams with perennial flow continue to receive water between storms because of:
a. aquicludes. b. traction. c. peak flow. d. flood crests. e. base flow.