Answer : B. equal birth and death rates.
Explanation : If people are being born and dying at a 1:1 rate then the population would not fluctuate because there would not be a increase or decrease in population.
Answer: the number of people per unit of area, usually quoted per square kilometer or square mile (which may include or exclude, for example, areas of water or glaciers).
Explanation:
The blood and skin goosebumb