Which of the following is true about the age of rock layers and the age of the earth? a. all rock layers are older than the earth. b. the earth is older than any rock layer. c. the bottom layer in a sequence of rock layers is older than the earth. d. the top layer in a sequence of rock layers is older than the earth.

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.