The answer is 78% nitrogen gas
i think it is B or A they make the more sense hope this helps ✌
The group of ecosystems on earth that feature climate, vegetation, and wildlife similar to everglades is a biome
DNA replication is said to be semi-conservative because of this process of replication, where the resulting double helix is composed of both an old strand and a new strand. ... Semiconservative replication would produce two copies that each contained one of the original strands and one new strand.