. What is absolute age?(2 points) Responses The time required for half of the atoms of a radioactive substance to break down into other elements. The time required for half of the atoms of a radioactive substance to break down into other elements. Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei. Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei. The geologic age of a fossil, or a geologic event or structure expressed in units of time, usually years. Also known as actual age.

Answer 1

The correct response for absolute age is: The geologic age of a fossil, or a geologic event or structure expressed in units of time, usually years. Also known as actual age.

This definition emphasizes the specific time measurement aspect of absolute age in geology and paleontology.