It’s c and reminder~ you are loved and needed :)
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.
Archaeopteryx is considered as the missing link between reptiles and Aves
it suggests that Aves evolved from reptiles . the fossil shows that it has both reptilian as well as Avian characters
<span>There are so many societal issue that scientists will be able to address using the sequence of the human genome. For example, health epidemics. Using the genome, scientists can easily found how a pathogen affects a population and search for genes that can inhibit the pathogen. But no all health epidemics are caused by a pathogen. The obesity, nowadays a social health issue in so many countries, is an epidemic that can be address using the human genome. Also, the drug Abuse and Addiction. Scientific have found genes that are related to obesity and also genes related to drug addition. A person who have these genes is more likely to suffer those conditions. But, the discover of these genes and the disease relation help scientists to search for a better treatment.</span>
