Question

3/10
how do paleontologists identify mass extinction events?
through changes in the fossil record
through genetic analysis
by studying current species
by observing weather patterns

Explanation:

Mass extinctions involve the sudden loss of a large number of species. Paleontologists rely on the fossil record, as it preserves the remains of ancient organisms; a sharp, widespread drop in the diversity and abundance of fossil species across geologic layers signals a mass extinction. Genetic analysis of living species, studying current species, and observing weather patterns do not directly provide evidence of past mass extinction events.

Answer:

Through changes in the fossil record