[Q]: - Solution caves are formed in limestone and similar rocks by the action of water - After a rain, water seeps into cracks and pores of soil and rock - The water percolates beneath the land surface - Some of the water reaches a zone where all the cracks and pores in the rock are already filled with water - Rainwater absorbs some carbon dioxide as it passes through the atmosphere and even more as it drains through soil and decaying vegetation - The water combines chemically with the carbon dioxide - A weak carbonic acid solution is formed What might be the last step of the process?
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[A]: This acid slowly dissolves calcite, forms solution cavities, and excavates passageways
input: Please answer the following: - The kidneys receive blood through the renal artery - The blood is passed through the nephrons in the kidneys - The kidneys filter the waste from the blood - The clean blood is circulated out of the kidneys What might be the last step of the process?
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output: Excess water and waste is expelled from the kidneys in the form of urine.
Please answer this: - Over 99% of the exocrine pancreas cells produce digestive juices - They secrete digestive juice 'externally' 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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Answer: When blood sugar levels are too low, the pancreas releases glucagon into the bloodstream
Problem: - You breathe air in - Air enters bronchial tubes - Air is then split into the bronchioles of each lung - Bronchioles have alveoli which are tiny air sacs - Alveoli is surrounded by many small blood vessels - Oxygen passes through alveoli into blood vessels - Blood leaves the lungs as it travels through the body - Blood carries carbon dioxide back to the lungs What might be the last step of the process?

A: Carbon dioxide released when you exhale.
Problem: Given the question: - Air travels into the body - Air reaches the lungs - The lungs absorb the oxygen from the air - The oxygen is transported by hemoglobin - Red blood cells are made of hemoglobin - Blood has a lot of red blood cells - The heart moves the blood throughout the body What might be the last step of the process?
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The answer is:
Blood can bring the oxygen to different cells in the body.
Problem: - A dam is built in an area prone to flooding - A large amount of rain occurs - The water builds up behind the dam - The dam opens its floodgates when it starts to get full - The water flows into a river below the dam - The dam closes its gates - The dam will occasionally open its gates again to gradually release more water What might be the last step of the process?

A:
Eventually all of the floodwater will be slowly released into the river without causing any flood damage.