I am pretty sure it is called a cultural trade
Formation. When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust.
Ja, they using Using Atmospheric Perspective to Gain Depth and Realism
and Reflection
Hope that's help! :)
Yep if they give you answer correct.
