Why Do Animals Need Oxygen? Animals need oxygen from air to carry out the reactions that release and transform energy from food. Carbon dioxide is released as a waste product during these processes. In mammals, including humans, air enters the body through the nose and mouth, and moves into the lungs. What process does require
Is Oxygen Present In Water? What is dissolved oxygen? Dissolved oxygen (DO) is the amount of oxygen that is present in water. Water bodies receive oxygen from the atmosphere and from aquatic plants. Running water, such as that of a swift moving stream, dissolves more oxygen than the still water of a pond or lake.
What Would Happen If There Was No Air For 1 Second? Pretty much everything that moves would panic at least a little. Most engines would be disrupted by a second without air, idling cars would stutter and likely stall, but moving cars would restart when air returned. What would have happened if there were no
How Is Oxygen Cycled Through Organisms In An Ecosystem? Plants and animals use oxygen to respire and return it to the air and water as carbon dioxide (CO2). CO2 is then taken up by algae and terrestrial green plants and converted into carbohydrates during the process of photosynthesis, oxygen being a by-product. What is oxygen