The two closest terms are C. acculturation and assimilation.
Both terms refer to the process in which two cultures meet and interact and "borrow" some aspects of the other culture - the difference is that assimilation produces more similar culture.
In contrast appropriation is a one-way process: only one culture takes on the characteristics of another culture.
By measuring the quantity of unstable atoms left in a fossil and comparing it to the quantity of stable daughter atoms in the fossil , scientists can estimate the amount of time that has passed since that fossil formed.
