The molecules are very small. These dimensions can be represented using comparisons. For example:
A water molecule is as many times smaller than a large apple, as many times as an apple is smaller than the globe.
There are so many molecules in one cubic centimeter of air that if each were enlarged to the size of a grain of sand, a mountain would form, which would close the large factory.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.