What make the phosphorus cycle different from carbon cycle

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

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.

Amap's orientation is typically determined by an