Look at the food chain.
А
B
C
D
Use the drop-down menus to logically construct a food chain.
A
B
snake
C
rabbit
D
hawk
grass

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.