Why does DNA make a copy of itself during cell division

What is the single most important equation in all of physics?

Astronomers studying the planet of rhombus have detected sedimentary rock on its surface. one astronomer wonders if material in this sedimentary rock used to be in igneous rock deep in rhombus’s interior. can igneous rock become sedimentary rock? explain your answer.

Abody covers a semicircle of radius 7cm in 5s .find its linear speed