<span>Damming a river has a variety of effects on the freshwater ecosystem, more than just altering the flow from A to B.  Dams create calm bodies of water, changing overall temperature regimes and sediment transport, leading to conditions which tend to favour generalist species. Loss of specialist species, particularly endemics, changes the community structure and leads to biotic homogenization.  A dam will withhold sediment in the reservoir, not just decreasing the amount of substrate available to local freshwater species, but even impacting diadromous, estuarine and marine species much further downstream.  The competition between resident species for food and breeding sites will increase as damming isolates populations, and perhaps more importantly, damming completely restricts migratory fish species.  Isolation may lead to decreases in genetic diversity and therefore puts species at greater risk from disease.  All of these effects may be exacerbated by changes in the surrounding land use.  Overall, damming river flow will lead to both a loss of native species, but also an increase in exotic species which are more likely to become established in degraded habitats. For this reason, dams are one of the greatest global threats to freshwater biodiversity.</span>
        
             
        
        
        
Answer I think the answer went to RNA
 
        
             
        
        
        
Bilateral injection procedure for lymphangiography of axillary node enlargement, left side CPT code: 38790-50 and ICD-10-CM code is ICD-10-R59.9.
The ICD-10-CM code can be found on the website by typing the medical procedure details. The ICD-9-CM-785.6 is the diagnosis code for enlargement of  for lymph node. When it is converted to ICD-10-CM the code is ICD-10-R59.9 
        
             
        
        
        
The difference between generative writing and drafting is that a generative writing brings up ideas, drafting develops one idea. It is a simple way to differentiate between generative writing and drafting. The correct option among all the options that are given in the question is the first option or option "a".
        
             
        
        
        
Answer:
Nucleic acid would be responsible.
Explanation: