What layer of earth are they in?
Lithosphere
What are they floating on?
The asthenosphere (the weaker upper mantle)
What makes them move?
The intense heat from the earths core that causes molten rock in the mantle layer to move. It moves in a pattern called convection cells that forms when warm material rises, falls, and sinks down.
From what we know, we can confirm that a variation that makes a gene different in some way from other genes for the same characteristics is called a mutation.
<h3>What is a mutation?</h3>
All genes in an organism are coded through a series of nucleotides. Each gene has its own sequence of nucleotides that make it unique. A mutation is a change in this nucleotide sequence caused by either external forces such as <u>UV light</u>, or <u>internal</u> <u>errors</u>.
Therefore, given the definition described, we can confirm that a variation that makes a gene different in some way from other genes for the same characteristics is called a mutation.
To learn more about mutations visit:
brainly.com/question/17106056?referrer=searchResults
The crust is like the shell of an egg because it is the hard, thin outer covering.
Hope that helped you.
based on the data it is 20