Our body send electrical messages throughout our body using charged atoms. these charged atoms have either a positive or negative charge because they either gained or lost electrons. what are these atoms called? a. lons b. covalents c. organic molecules

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.