Select all answers that apply. which of the following statements depend on the absolute dating of events? a. dinosaurs went extinct before monkeys evolved. b. birds separated from dinosaur relatives 120 million years ago. c. the oldest earth rocks are 3.9 billion years old. d. in undisturbed rock layers, we find older rock layers beneath younger rock layers.

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.