What is digital vs analog? what is an example of each?

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

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

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?