What is the final step of the following process: -  You breathe oxygen into your body through the nose or mouth - The oxygen travels to the lungs through the windpipe - The air sacs in the lungs send the oxygen into the blood stream - The carbon dioxide in the blood stream is transferred to the air sacs
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Answer: The lungs expel through the nose or mouth back into the environment.


What is the final step of the following process: -  When water freezes it becomes 10% bigger, or takes up 10% more space - As water expands it puts great pressure on the walls of anything containing it, including any rocks which happen to be surrounding it - The force of the pressure exerted on the rock surrounding it is enough to wedge the walls of the crack farther apart, thus expanding and deepening the crack - Clay expends when wet like ice does - This causes rock to break apart - Some plants like mosses and lichens are capable of growing without soil on bare rock
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Answer: When they do this their roots penetrate pores and crevices and cause rocks to split apart as the roots force their way down through the rocks


What is the final step of the following process: -  Thunderstorms form over the ocean - An area of low pressure causes rotation - Several thunderstorms come together around this area - The storm is fed by rising air from warm ocean water evaporating
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Answer:
When the wind speeds reach 74 mph the storm is considered a hurricane.