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.
Limiting factors determine the immigration capacity of a population. 2. A limiting factor controls the growth of a population. 3. Limiting factors operate when growth is exponential. 4. Populations grow too large in the absence of limiting factors. 5. Competition is an example of a limiting factor. 6. Population size can be limited by factors such as predation.