Question

biozones are used to determine the relative age of rock layers across vast distances. this helps scientists infer environmental conditions during that time period

Explanation:

Biozones are defined as intervals of geologic time characterized by the presence of a particular fossil assemblage. By correlating biozones across different locations, scientists can establish the relative age of rock layers. Since different organisms thrived in specific environmental conditions (e.g., marine vs. terrestrial, warm vs. cold climates), the fossils within biozones provide clues about past environmental conditions.

Answer:

True