What is the final step of the following process: - Air is taken into the body via the nose or mouth - The air travels into the windpipe - The windpipe divides the air to the two lungs via the bronchial tubes - The lungs oxygenate the blood in the body - Carbon dioxide is filtered out by every cell in the body - The carbon dioxide is carried back to the lungs via the bloodstream
Ans: The carbon dioxide is exhaled.

What is the final step of the following process: - A hurricane usually starts as an organized thunderstorm activity that stretches at least 100 miles across and maintains its identity for more than 24 hours - Under the right conditions it can develop further and start to spin around a low-pressure center - If it develops it's classified as a 'tropical cyclone' or 'tropical depression' - If the system strengthens and wind speeds rise past 39 mph, the system is dubbed a 'tropical storm'
Ans: If the pressure in the center drops even further and the winds really pick up and forms a clearly defined 'eye' it's a hurricane

What is the final step of the following process: - You inhale - Your diaphragm moves down - Your lungs have more room - Your lungs fill with air - You exhale - Your diaphragm moves back up - Carbon dioxide is exhaled
Ans: You start the process over again.

What is the final step of the following process: - Sediment becomes loose from the rest of the soil - The sediment rolls down hill towards a river - The heavy items sink to the bottom - The lighter items float on the top and in convection cycles - As the river flows the sediment is moved - The sediment gets dumped through tributaries into lakes and the ocean
Ans: The sediment keeps moving around the world in convection currents.