A geochemist is a scientist who studies the chemical composition of the Earth and its processes. They analyze rocks, minerals, soil, and water to understand how chemical elements interact and change over time. This information helps in areas like natural resource management, environmental protection, and understanding geological hazards. Geochemists often use advanced techniques and instruments to conduct their research. They may work in laboratories or conduct field studies to collect samples. Their findings can contribute to fields such as environmental science, petroleum geology, and mineral exploration, providing valuable insights into Earth's systems and resources.