Problem: Given the question: -  Waste products are deposited in the blood - Blood is carried to the kidneys through the renal arteries - The kidneys contain filters inside - The filters capture the waste products - The waste is combined with water to make urine - The urine leaves the kidney and is collected in the bladder  What might be the last step of the process?
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The answer is:
The cleaned blood is returned to the body.


Problem: Given the question: -  Acid rain is produced by chemicals that reach into the atmosphere - Falls onto the ground - The acid rain starts scouring rocks - Destroys vegetation  What might be the last step of the process?
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The answer is:
The lack of vegetation alters the surrounding environment.


Problem: Given the question: -  Over 99% of the exocrine pancreas cells produce digestive juices - They secrete digestive juice &#x27;externally&#x27; into the small intestine - There are enzymes for breaking down fats, proteins , and carbohydrates - Digestive juices flows from the pancreas through an excretory duct into the small intestine - When the blood sugar levels rise, as they might after a meal, insulin is released  What might be the last step of the process?
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The answer is:

When blood sugar levels are too low, the pancreas releases glucagon into the bloodstream