Explain what centimeters, kilometers, and millimeters

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound

This rapid change in species that rarely leaves behind fossil evidence is referred to as