species used to become extinct over a series of thousands of years how quickly can they become extinct now?

What types of energy transfers and energy transportations are involved in the domino chain reaction?

How does the molecular clock work? a. it analyzes the brain functionality of two different species.b. it examines and compares the physical characteristics of two different species.c. it illustrates relationships between two different species.d. it compares the number of mutations that exist in the dna of two different species.

Explain how scientists use geologic time to determine the age of landforms.