A pair of 6-sided dice are numbered 1 to 6. Brian rolls the dice one at a time. If he rolls a 5 on the first roll, what is the probability he will roll a 5 on the second roll? a. 1/5 b. 1/6 c. 1/2 d. 1 e. 1/36

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.