The evidence that supports the conclusion that bdelloid rotifiers have likely been asexual for 100 million years is t<span>he comparison of the DNA of bdelloids and that of sexually reproducing rotifer species. Based on this comparison, the scientists could clearly see the difference between the reproduction cycle of rotifier, and that of bdelloid, or rather the lack of it. </span>
In desperate need of soldiers to help with the invasions, Rome hired mercenaries to defend its borders. According to some historians, many were Germanic warriors who did not feel loyalty to Rome. ... The most evident factor of the Roman Empire's fall was the invasions.
