Name four macromolecules present in all living things and identify what they have in common.

 - A typical meal contains all four types of macromolecules. Living things are made of fourtypes of molecules, known as macromolecules: ... Highly specialized at what they do, proteins form both the railways and the motors that ... it exists as a single strand and has a special building block notfound in DNA.

A typical meal contains all four types of macro-molecules. Living things are made of four types of molecules, known as macro-molecules... Highly specialized at what they do, proteins form both the railways and the motors that.. it exists as a single strand and has a special building block not found in DNA. 

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Amight be the answer

It is evolution, because we all have some of the same traits like eye color or shape or ears.