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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 __________________
5. “GOODS & SERVICES” provided by ecosystems ____________regulation
6. ____________________of human and
“GOODS & SERVICES” provided by ecosystems
7. Source of new ____________________
Air & water __________________
Soil _____________ and ___________
“GOODS & SERVICES” provided by ecosystems
8. HUMAN POPULATION
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 = ____________
16. BIODIVERSITY THREAT
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
of these animals are
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?
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
2. Modern farming____________
allowed planting larger areas
3. Chemical ___________ & ___________ boosted crop production and controlled pests __________ REVOLUTION
31. MONOCULTURE Large fields are
planted with a
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
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.
__________ imaging and
enable farmers to
apply chemicals only
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
Air, water, & soil
_____________ has had an impact on surrounding ecosystems.
43. Energy production requires
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.
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.
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