A ball is pushed from a stop and rolls 6 m in 2s. Student A says the average speed of the ball is 3m/s. Student B says the average speed of the ball is 1.5 m/s which student isn’t correct? Explain your answer.

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.

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.

Each line (unit) on the horizontal axis represents: 5 years 10 years 20 years all of the above