Para describir un cuerpo o material o para diferenciarlo de otro que ponemos en practica​

Increased profits reduced health risks

Themes; subfields is the answer

Answer light in color; silica-rich;

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!