1. Human population growth

2. In the United States and developed countries, the current growth rate is ________

3. Human population growth In the United States and developed countries, the current growth rate is very low

4. Human population growth In the United States and developed countries, the current growth rate is very low In some developing countries, the human population growth is nearly _______

5. Human population growth In the United States and developed countries, the current growth rate is very low In some developing countries, the human population growth is nearly 3 people per second

6. Human population growth In some developing countries, the human population growth is nearly 3 people per second Because of this, the human population is well on its way to reaching ____________ in your lifetime

7. Human population growth In some developing countries, the human population growth is nearly 3 people per second Because of this, the human population is well on its way to reaching 9 billion in your lifetime

8. Human population growth

9. For most of human existence, the population grew ______ Human population growth Agriculture begins Plowing And irrigation Bubonic plague Industrial Revolution begins

10. Human population growth For most of human existence, the population grew slowly Human population growth Agriculture begins Plowing And irrigation Bubonic plague Industrial Revolution begins

11. Human population growth About 500 years ago, the population began growing more rapidly because life was made easier by advances in _______, ______, and _______. Human population growth Agriculture begins Plowing And irrigation Bubonic plague Industrial Revolution begins

12. Human population growth About 500 years ago, the population began growing more rapidly because life was made easier by advances in agriculture, industry, and medicine Human population growth Agriculture begins Plowing And irrigation Bubonic plague Industrial Revolution begins

13. Human population growth With these advances, the human population experienced ____________ Human population growth Agriculture begins Plowing And irrigation Bubonic plague Industrial Revolution begins

14. Human population growth With these advances, the human population experienced exponential growth Human population growth Agriculture begins Plowing And irrigation Bubonic plague Industrial Revolution begins

15. Human population growth Human population cannot keep growing exponentially forever because Human population growth Agriculture begins Plowing And irrigation Bubonic plague Industrial Revolution begins

16. Human population growth Human population cannot keep growing exponentially forever because Earth and its resources are limited. Human population growth Agriculture begins Plowing And irrigation Bubonic plague Industrial Revolution begins

17. Human population growth

18. nonrenewable resources -

19. nonrenewable resources – resources that are used faster than they are formed. Examples -

20. nonrenewable resources – resources that are used faster than they are formed. Examples – oil, coal, natural gas

21. renewable resources -

22. renewable resources – resources that cannot be used up or can be replenished over time faster than they are used up examples -

23. renewable resources – resources that cannot be used up or can be replenished over time faster than they are used up examples – wind energy, solar energy, drinking water, lumber/paper

24. ecological footprint -

25. ecological footprint – the amount of land necessary to produce and maintain enough food and water, shelter, energy and waste

26. The size of an ecological footprint depends on a number of factors

27. ecological footprint – the amount of land necessary to produce and maintain enough food and water, shelter, energy and waste The size of an ecological footprint depends on a number of factors amount and efficiency of resource use Amount and toxicity of waste produced

29. The average U.S. citizen’s ecological footprint covers an area larger than

30. The average U.S. citizen’s ecological footprint covers an area larger than 24 football fields.