A population can increase by______or _______? Environmental Science Population Human Population Growth 1 Answer David Drayer Mar 29, 2018 migration or birthrate. Answer link Related questions What are some improvements in health care that would contribute most directly to reducing... What contributes to countries having high fertility rates? And which countries have the highest rates? Should the government of any country get involved in the number of children the citizens should have? How does population growth in other countries affect the US? What are the affects of population growth on economic development? What are the reasons for India’s rapid population growth? Which countries have the lowest and highest population growth rates? How do you solve net population growth word problems? What are the pros and cons of population growth? What are the reasons why population growth in developing countries is forecast to exceed... See all questions in Human Population Growth Impact of this question 1826 views around the world You can reuse this answer Creative Commons License