What does population density mean?
A. The number of animals and plants present in a given area
B. The number of individuals in a unit area in a unit time
C. The concentration of human population
D. The number of animals and plants present in a given area
Answer:B
What does population density mean?
A. The number of animals and plants present in a given area B. The number of individuals in a unit area in a unit time C. The concentration of human population D. The number of animals and plants present in a given area