Explanation:
because at is formed,the lighter part floats on the surface and the really heavy part (like iron and nickel in the core)sank to the middle
Are there multliple choice, if so what are the answers and I can help you out
Polarity- Epithelium is arranged so there is one free surface (apical surface) and one attached surface (basal surface)
Cellular nature– Cells in epithelium fit closely together side by side and sometimes atop each other to form sheets of cells.
The law of conservation of energy states that the total energy of an isolated system remains constant it is said to be conserved over time for instance, chemical energy is converted to kinetic energy when a stick of dynamite exploded hope this helps and good luck
