If a substance has a half-life of one year, how long will it take for half of the substance to decay?

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!

Nestor foreshadows the plan of the suitors to kill telemachus through his account of what happened to agamemnon who was murdered by people around him. despite this telemachus was reassured that his voyage was going to be safe with the of athena.