HUMAN IMPACT on the BIOSPHERE Chapter 6-1 plus page 160   A Changing Landscape

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HUMAN IMPACT on the BIOSPHERE Chapter 6-1 plus page 160 A Changing Landscape

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1. HUMAN IMPACT on the BIOSPHERE Chapter 6-1 (plus page 160) A Changing Landscape

3. Humans participate in ____________ & _______________cycles Ecosystems provide us with a variety of _____________________

4. “GOODS & SERVICES” provided by ecosystems __________________ ___________ production Nutrient ____________________

5. “GOODS & SERVICES” provided by ecosystems ____________regulation __________ production ___________for wildlife

6. ____________________of human and industrial waste ___________________ and ______________________ “GOODS & SERVICES” provided by ecosystems

7. Source of new ____________________ Air & water __________________ Soil _____________ and ___________ management “GOODS & SERVICES” provided by ecosystems


9. WORLD POPLUATION Current world population almost 7 BILLION Estimates predict it will reach 9 billion by 2050

10. HUMAN ACTIVITIES can change local and global environments! ____________________ ____________________ _____________________ ___________________________

11. HUNTING AND GATHERING Throughout human history, people have ____________ and ___________ in rivers, and _____________ wild seeds, fruits, and nuts. We are still doing this today in many places.

12. WHEN IT BECOMES A PROBLEM? _________________ ________________

13. OVERHUNTING can put animal populations at risk of ____________

14. VOCAB Species that has died out = ______________ Species whose population size is rapidly declining and will become extinct if the trend continues = _____________ Species that is at risk of becoming endangered in the near future = ____________


17. EXAMPLE: WHALES During the 19th and the earlier part of 20th centuries, over-hunting led to a severe _________of whale populations, and to _______________ of many whale species.

18. Today many major whales species are endangered

19. EXAMPLE: North American Buffalo ______________ in America once numbered 30 - 60 million, ranging from Virginia to Alaska and all points in between. By 1884, the buffalo was close to extinction due to ______________.

20. HOW DO WE HELP? International Whaling Commission has placed a moratorium on whaling. Only works if nations voluntarily comply

21. HOW DO WE HELP? Conservation efforts, private ownership, and reintroduction of buffalo have allowed the population to recover slightly. Today, the total buffalo population in North America is estimated at 90,000 and about 85 percent of these animals are privately owned.

22. WHAT PROBLEMS CAN THIS CAUSE? Many endangered animals today are threatened by ____________________

23. OVERHUNTING/POACHING All five rhino species are ____________ Just a few decades ago, the world’s rhino population exceeded 100,000, but today there are less than 11,000 due to _____________ and _________________. _______________ are in demand in many countries where they can bring over $60,000/lb. It is ground into medicine in China and carved into ceremonial dagger handles in Yemen.

24. WHAT CAN WE DO TO HELP? The_________________________________________________________ (CITES) bans international ________ in products from endangered species.

25. WHAT CAN WE DO TO HELP? Support “Green” organizations that work for laws to establish quotas and protect species.

26. HUMAN ACTIVITIES can also change local and global environments! ______________________________ ____________________ _________________ ___________________________

27. By end of last ice age (about 11,000 years ago) humans began the practice of farming = __________________ Soon people around the world were growing crops and raising animals for food

28. Changing Agriculture The spread of agriculture was one of most __________ developments in human history. It provided__________ in large quantities that could be stored for later. Allowed people to _________ in one place and enabled the _______________of cities, governments, laws, and writing.

29. Changing Agriculture By middle of 20th century, despite agricultural advances there were ________________in many parts of the world. Governments and scientists began a major effort to ____________ food production

30. New more productive plant ________ 2. Modern farming____________ allowed planting larger areas 3. Chemical ___________ & ___________ boosted crop production and controlled pests __________ REVOLUTION

31. MONOCULTURE Large fields are planted with a single variety year after year = ________________

32. Changing Agriculture Over the last 50 years, the green revolution has helped world food production _________. Even though hunger is still a major problem in parts of the world, agriculture and the green revolution have provided many people with better nutrition.

33. Challenges for Future Modern agriculture has increased world _________________, but has also created ________________ challenges. Large scale monoculture leads to problems with ____________ and _______________. Use of farm chemicals (fertilizers & pesticides) can damage ____________ insects, ________________ water supplies, and ______________ in the environment

34. Challenges for Future Finding enough __________ for irrigation is another problem. Less than ¼ of US farmland relies heavily on ___________, but this area produces a __________ portion of our harvest.

35. Challenges for Future Many Midwest states rely on the ___________aquifer for their water needs. However, we are using water faster than the water cycle can _____________ it. Evidence indicates this aquifer may __________ within 20-40 years.

36. HEY, WE GOTTA EAT and HAVE A PLACE TO LIVE, DON’T WE? The planet provides us with the resources we need to stay alive, but . . . how do we balance our needs (wants?) with keeping the planet healthy so it will be around for future generations?

37. HOW DO WE HELP? Applying modern______________ to farming is changing some of this environmental impact. EX: __________ imaging and _____ technology enable farmers to apply chemicals only where______________

38. HOW DO WE FIX IT? EX: ________ and other “green” farming methods can reduce ____________ and protect ___________________

40. INDUSTRIAL GROWTH and URBAN DEVELOPMENT The impact of humans on the biosphere was transformed by the _____________________ during the 1800’s.

41. Industrial productivity and scientific advancements have provided us with the ______________________ we enjoy today

42. BUT . . . The spread of urban areas has resulted in the _____________ habitats. Air, water, & soil _____________ has had an impact on surrounding ecosystems.

43. Energy production requires ______________________ which impacts _______________ and _______________.

44. SOUTH DAKOTA CORE SCIENCE STANDARDS 9-12.N.1.1. Students are able to evaluate a scientific discovery to determine and describe how societal, cultural, and personal beliefs influence scientific investigations and interpretations

45. SOUTH DAKOTA CORE SCIENCE STANDARDS 9-12.N.1.2. Students are able to describe the role of observation and evidence in the development and modification of hypotheses, theories, and laws.

46. SOUTH DAKOTA CORE SCIENCE STANDARDS 9-12.L.3.1. Students are able to identify factors that can cause changes in stability of populations, communities, and ecosystems. Predict the results of biotic and abiotic interactions. Examples: Fluctuation in available resources (water, food, shelter) Human activity Response to external stimuli

47. SOUTH DAKOTA CORE SCIENCE STANDARDS 9-12.E.1.2. Students are able to describe how atmospheric chemistry may affect global climate. Examples: Greenhouse Effect, ozone depletion, ocean’s effects on weather 9-12.E.1.3. Students are able to assess how human activity has changed the land, ocean, and atmosphere of Earth. Examples: forest cover, chemical usage, farming, urban sprawl, grazing

48. SOUTH DAKOTA CORE SCIENCE STANDARDS 9-12.S.1.2. Students are able to evaluate and describe the impact of scientific discoveries on historical events and social, economic, and ethical issues. Examples: nuclear power, global warming, and alternative fuels

49. SOUTH DAKOTA ADVANCED SCIENCE STANDARDS 9-12.L.3.1A. Students are able to relate genetic, instinct, and behavior patterns to biodiversity and survival of species. (SYNTHESIS) Relate the introduction of non-native species to the disruption of an ecosystem. Examples: zebra mussels

50. SOUTH DAKOTA CORE SCIENCE STANDARDS 9-12.S.2.1. Students are able to describe immediate and long-term consequences of potential solutions for technological issues. Examples: environmental, power and transportation, energy sources, issues 9-12.S.2.2. Students are able to analyze factors that could limit technological design. Examples: ethics, environmental impact, manufacturing processes, operation, maintenance, replacement, disposal, and liability 9-12.S.2.3. Students are able to analyze and describe the benefits, limitations, cost, and consequences involved in using, conserving, or recycling resources. Examples: agriculture, energy

51. Core High School Nature of Science Performance Descriptors

52. Core High School Life/Earth Science Performance Descriptors

53. Core High School Technology, Environment, Society Performance Descriptors



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