<span>Any type of pharmaceutical product or dietary supplement must be tested in clinical trials before they can be marketed in order to assess their safety for the general public's consumption and to confirm their intended purpose. While not a complete fail safe, these tests intend to prove a reasonable sense of safety for the product.</span>
Multiple sites on the DNA during DNA replication allow the process to happen much faster than it would with a single site.
Answer: Yes! there is life in the stratosphere but not the type you think, it's actually microbial life forms that live on it.