Answer: The answer is D) A comparison of physiologic densities and arithmetic densities helps geographers understand
the capacity of land to yield food for the total population
Explanation:
As my memory serves me well, innovations like the production of gunpowder, tea, and silk are usually attributed to D. China
Acid - an acid is a chemical species that donates protons for hydrogen ions and or excepts electrons. Most as it’s contain hydrogen atom bonded that can release (dissociate) to yield the cation and anion and water.
D. Evolution would not occur.
If there was absolutely no variation within a organism there is no chance of the new organism deviating from the norm.