Answer:
Tundra
Explanation:
Permafrost is a layer just beneath the surface of the ground that never thaws.
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.
<span>When ozone forms near the ground, it is known as a secondary pollutant. This is because it is the result of two primary pollutants reacting to create a new substance. The reaction between the primary pollutants is airborne and then the resultant ozone settles near the surface of the ground.</span>