Suppose that l is a list is of length n and it is sorted using insertion sort. if l is already sorted in the reverse order, show that the number of comparisons is (1/2)(n 2 – n) and the number of item assignments is (1/2)(n 2 +3n) – 2.

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.