It’s the source of all the energy from all the stars ... until their fuel is used up
The majority of the accessible drinking water on our planet comes from glaciers.
During DNA Replication, the DNA molecule unzips itself so that there are two free strands of DNA. Both of those strands then create new complementary strands of DNA. Thus every subsequent generation of DNA uses one of the parent cell's strand of DNA as a template, which is why DNA replication is said to be semi-conservative. Hope this helped!