Show:
The Demographic Transition
Age-Structure Diagrams
Agriculture and Human Activity
Renewable Resources 1
Renewable Resources 2
100
How has the population of humanity changed over time?
It has increased over time
100
What are the two things that age-structure diagrams show?
Age and gender
100
The practice of farming plants and animals for food is known as...?
Agriculture
100
Fisheries are an example of a renewable resource because...?
They reproduce (at a reasonably fast rate)
100
True or false: Renewable resources are infinite. (For obvious reasons, this question cannot be stolen)
False: renewable resources are still finite, or limited, resources
200
What is demography? (only complete answers count!)
Demography is the study of human populations.
200
What are the three things that are needed to predict how a population will change?
Birth rates, death rates, and age-structure
200
Which of the following CANNOT be used for agriculture, and why? (A) lakes; (B) aquifers; (C) rivers; (D) oceans; (E) rainwater
(D) oceans; saltwater cannot be used for agriculture
200
Fill in the blanks with the most appropriate words: the water cycle is a _____ cycle, whereas the carbon cycle is a _____ cycle.
The water cycle is a FAST cycle; the carbon cycle is a SLOW cycle
200
Fossil fuels are a part of what nutrient cycle?
The carbon cycle
300
The population curve for a country that undergoes the demographic transition looks like what letter? What type of growth does this represent?
The letter "S"; logistic growth
300
Suppose an age-structure diagram for a village has the widest bands at the top of the diagram and narrow bands everywhere else. How will the population change in the near future, and why?
The population will decrease because there are lot of elderly people.
300
Agriculture is estimated to have used about what percentage of water flowing through the Rio Grande?
75% (answers from 70% to 80% are acceptable)
300
What are three specific and separate examples of nonrenewable resources?
Coal, oil/petroleum, and natural gas
300
What does the "tragedy of the commons" mean?
When a common/shared resource is used up and destroyed by people (because they neglect their shared responsibility)
400
What are the birth rates and death rates like for stage one of the demographic transition? For stage four of the demographic transition?
Both birth and death rates are high in stage one. Both birth and death rates are low in stage four.
400
What is the green revolution?
An increase in the world's food supply (due to advances in pesticides, fertilizers, and high-yield crops)
400
Forests are considered the "lungs of the earth" because...?
Trees consume carbon dioxide and produce oxygen
400
What are three causes of desertification?
Dry weather, overgrazing, and deforestation
500
What are three things that can help a country move from stage one of the demographic transition into stage two?
Answers may vary, but can include: better healthcare, better sanitation, better machines, better agriculture
500
Suppose a country has an age-structure diagram that has extremely wide bands at the bottom with very narrow bands everywhere else. Which stage of the demographic transition is this country in, and why?
The first stage, since there are a lot of births (wide bands at the bottom) but also many deaths (narrow bands everywhere else)
500
What are the four main human activities that affect the biosphere?
Hunting/gathering, agriculture, industrialization, and urban development
500
What are three specific ways that deforestation affects other types of renewable resources?
It damages the purity of water, it leads to increased air pollution, and it causes soil erosion leading to desertification
500
What are three ways to purify and clean the air out of the seven mentioned in our in-class article?
Three of the following must be mentioned: face masks, planting trees, cleaning building air, in-car filters, domestic air quality monitors, personal air purifiers, extractor fans