Which of the following describes acceleration? a. acceleration cannot be described with a negative number. b. acceleration is a vector quantity. c. acceleration describes how displacement changes with time. d. the si units for acceleration are m/s.

The answer would be:

B. Acceleration is a vector quantity.

We can rule out the others because:

---Acceleration CAN be described with a negative number. The sign actually shows the direction. A negative number indicates a deceleration.

---Displacement change over time is the definition of velocity NOT acceleration.

---The SI unit for acceleration is m/s².

***A vector quantity is measure of magnitude and direction, which acceleration has.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

organisms that are both used in toothpaste as well as cause malaria are protista and monera.