Question

question 1 - 5
scientists who study elements and how they interact are called chemists. which of the following would a chemist most likely study?
the behavior of microscopic organisms in a pond
the evidence of changes in the climate of the ancient earth
the structure and properties of elements like oxygen and iron
the formation of stars and galaxies

Explanation:

Chemists study the structure, properties, composition, reactions, and transformations of matter. Elements like oxygen and iron are subjects of chemical study. The behavior of microorganisms is for biologists, climate - change evidence is for geologists or climatologists, and star and galaxy formation is for astronomers.

Answer:

The structure and properties of elements like oxygen and iron