Acredible source contains which of the following?

pictures and ideas
facts and evidence
thoughts and feelings
opinions and persuasion

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

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.