Natural levels of nitrate in Minnesota groundwater are usually quite low (less than 1 milligram per liter [mg/L] of nitrate-nitrogen). However, where sources of nitrate such as fertilizers, animal wastes, or human sewage are concentrated near the ground surface, nitrate may seep down and contaminate the groundwater. Elevated nitrate levels in groundwater are often caused by run-off from barnyards or feedlots, excessive use of fertilizers, or septic systems.
Wells most vulnerable to nitrate contamination include shallow wells, dug wells with casing which is not watertight, and wells with damaged, leaking casing or fittings.
Nitrate contamination of a well is often regarded as a first sign of deteriorating groundwater quality.
The answer to this is nutritional status.
The balance between nutrient intake and nutrient requirements is described as <u>nutritional status.</u>
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Answer:
D) classification is like organizing a closet by hanging clothes together based on their type, color, and season.
Explanation:
The right answer is false.
Lobotomy is a brain operation that cuts or alters the white matter of a brain lobe. It is now banned in many countries and is no longer considered a good practice in today's medicine.
The lobotomy was performed in psychosurgery with the aim of interrupting certain neural circuits to treat mental illnesses, schizophrenia, epilepsy and even chronic headaches before declining in the 1950s with the advent of the first neuroleptics.
