An introduction on evolution in animals (fish and rat specially) also including homologous and analogous!

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.

What material did the moon come from?

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?