Subsoil: layer of soil under topsoil on the surface of the ground
Topsoil: fertile, upper part of soil
Regolith: unconsolidated residual or transported material that overlies the solid rock on the earth
Bedrock: lies under regolith, can be 100 meters undersurface.
Order of surface: Topsoil --> Subsoil --> Regolith --> Bedrock
Your answer is bedrock
Whales play an important role in the marine ecosystem where they help provide at least half of the oxygen you breathe, and they also improve climate change. Hope that helps.
It is the Watt per square meter, or W/m2.
Nucleic acids because the DNA of a organic compound is part of the nuculis family
