How does the phrase division of labor relate to differentiation?

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

How long does it take a skateboarder going 6.0 m/s to come to a complete stop if she slows down at a rate of 2.0 m/s^2