Why don’t warm air masses form over North Atlantic or Pacific oceans?

Air masses take on the characteristics of their source region. Air masses over large areas of similar temperature and moisture content. If the source area is moist the air mass will be moist. In the case of the North Atlantic and the North Pacific you have large areas of cold water, so cold and moist. This produces air masses that are also cold (cool) and moist.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.