General ecology name draw a circle representing the earth. add lines for equator, 30*n, and 30"s. along the right edge add circles with arrows representing the hadley circulation system, labeling the hadley cells, ferrel cells, and polar cells. add an arrow next to the equator corresponding to the direction that the earth is spinning. now, within the earth circle, add curved lines for the tradewinds and westerlies, labeling each of these set of winds. finally, add a line representing the furthest north that the solar equator reaches in our (northern hemisphere) summer, and label with the appropriate degrees (hint: this will correspond with the tilt of the earth's axis). 1) 2) why are there deserts at the junction of the hadley cells and ferrel cells you drew above? refer to air movement, air temperature, and water vapor content in your answer.