Other sites let you use the Google Authenticator app to generate the six-digit number. The app generates a different six-digit number for each connected site, and these numbers change every 30 seconds. With the app, you don't have to wait a few seconds to receive a text message.
Factors that cause population growth include increased food production, improved health care services, immigration and high birth rate. These factors have led to overpopulation, which has more negative effects than positive impacts. Keep Learning.
What types of population-related issues might people be talking about at that time? (Accept all reasonable answers. Encourage groups to elaborate on their responses.) Development. Have students use their Population Dynamics student esheet and go to and read Population Studies which has a good overview of factors influencing population growth. 1  When they are finished, lead a discussion addressing questions like these: