<span>Reverse osmosis and filter water pitchers appear to be quite popular these days as methods to get cleaner water. People clearly want better quality water, but may not understand that different methods generate different results. All water filtration methods are not equal. There are many ways to improve water quality. One popular method is to use a pitcher with a filter. These filters are carbon based and can remove some chemicals, particularly organic chemicals. This improves the smell and taste of the water for many consumers, but there still may be a variety of contaminants left behind in their drinking water.</span>
Answer:E. Down-regulation
Explanation:Cells typically up or down regulate depending on the concentration of a hormone levels. When there is a excessive concentration of a hormone in the blood stream, the cell decreases the number of receptors reducing the interaction with that hormone, Also, when there is excessive hormone reduction, the target cells activate to increase their number of receptors.
Down regulation occurs by the the deactivating or degrading of target cells to reduce the number of receptors due to their sensitivity to a particular excess hormone.
CDNA does not have introns and therefore can be expressed in prokaryotic cells. cDNA libraries are most useful in reverse genetics where the additional genomic information is less use. Also, it is useful for subsequently isolating the gene that codes for that mRNA.
ATP: Adenosine Triphosphate<span> </span>
Answer:
think its C cause when you boil it almost loses all its colour