Hen Hao runs two laps around a track. Her overall average speed for the two laps was 20% slower than her average speed for just the first lap. If the ratio of Hen Hao's average speed in the first lap to her average speed in the second lap is m/n, what is the value of 10m n

Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.