How does one determine a country's natural increase?

Suppose you had to resolve the problems believed to be caused by distance decay in russia. what would you suggest?

Which of the following statements best describes what is occurring in the land surrounding the sahara desert? a desertification is increasing, and the desert is expanding. b. fewer people are trying to farm in this semiarid region. c. the desert is shrinking with the increased use of irrigation. d. increased urbanization has resulted in decreased deforestation. select the best answer from the choices provided mark this and return save and exit next submit

One disadvantage that darwin faces today is w. enemy attacks x. natural disasters y. lack of land bridge z. high population density