Question

who was the first person to suggest the existence of atoms? dalton democritus proust thomson

Explanation:

Democritus was an ancient Greek philosopher who first proposed the concept of atoms. He suggested that matter is composed of tiny, indivisible particles called atoms. Dalton is known for his atomic theory in the 19th century. Proust is associated with the law of definite proportions. Thomson discovered the electron.

Answer:

Democritus