The fossil record of Antarctica shows the presence of tropical plants, such as one particular species related to the present day breadfruit. Most plants cannot survive in prolonged temperatures of less than 6 degrees Celsius. Antarctica is freezing all year round and could only have supported tropical and sub tropical plants if it was once much closer to the equator.
The presence of fresh water species also suggest that the continent was closer to the equator. Antarctica is frozen solid with a thick ice sheet.....rivers would be frozen solid all year round or would be limited to water movement under glaciers that melt as a result of pressure and friction. This environment is not suitable to support large fresh water organisms.
This would negatively impact the native bird species and the fish population as well as any other underwater species such as smaller fish and algae as they may have overgrowth and could even become an invasive native species over time because the food chain would be disrupted. The native bird species wouldn’t have much food supply and would either die off or migrate to another place, and the feeder schools of fish (large fish) would probably also eventually die off because they would be over dominated with multiple species feeding off of them. The natural food chain already established would be disrupted.
He association of two or more polypeptides in a multimeric protein is known as the <span>Quaternary structure.</span>
They are breaking down the toxins, I presume.
DNA is a negatively-charged molecule. Also cell membranes are negatively charged. The problem would be how to push this charges together? I<span>f you put some CaCl2 into the mixture, the CaCl2 will "split" giving 2Cl- and Ca2+. This last ion will be attracted by the negatively charged DNA and will "cover" it, hiding its negative charge. Hope this answers the question.</span>
