Any process that exerts a stress on a rock that eventually causes it to break into smaller fragments is a type of mechanical weathering.
As the sun heats the surface of the oceans, two layers of water result. These layers are separated by the Thermocline.
so your answer is thermocline.
An exoskeleton is the outer skeleton of an animal to protect them. An exoskelton is also called a shell.
Answer: 47 Chromosomes
Explanation: People with Down syndrome typically have three copies of chromosome 21 in each cell, for a total of 47 chromosomes per cell.