Number one is "sand dunes".
Number two is "the breakdown of rock through mechanical disintegration and physical stress."
the process by which Earth makes heat is called radioactive decay. it involves the disintegration of natural radioactive elements inside Earth. ex; uranium is a special kind of element because when it decays, heat is produced from it
Taiga is the largest Continental Biome. It experiences long, cold winter; short, mild summers; and low precipitation. It is characterized by Coniferous forests. It covers most of the Southern Hemisphere.