Which of the following best describes the principle of faunal succession?
A) Rock layers will extend equally in all directions until they pinch out or reach the edge of a basin.
B) Fossil organisms succeed one another in a specific and identifiable order.
C) Only the most successful organisms will survive climatic extremes.
D) Faults are younger than the materials they cut across.
Question 2
If 235U has 92 protons, how many neutrons does it have?
A) 25
B) 92
C) 143
D) 235