Download 1. Human Population Review - Hicksville Public Schools

ENVIRONMENTAL SCIENCE II FINAL
EXAM REVIEW
UNIT 1: HUMAN POPULATION
• Final Exam will be on Wednesday June 10, 2015
• The final exam is worth 20% of your final grade for the course
• Please bring a pen or pencil to the exam with you.
Absences:
 Excused absence- you will take it on the day you return
 Unexcused absence- you will receive a 0
*****During the exam, if your cell phone or any electronic device is on your
person, you will receive a 0!!!*****
UNIT 1: HUMAN POPULATION
 Current world population: about 7 billion
 Resources: something that lies ready for use, can be
used to help us
oEx: oil, coal, minerals, trees, books, people
 Sustainable: to keep in existence, maintain
oWhy is this important: to keep resources in
existence for future populations
1. Hunter Gatherer:
 Nomadic- move around
 Small impact on the
environment- small population,
didn’t stay in one place for too
long
2. Agricultural:
• Farming
• Settle permanently- rise of cities
• Plows, domestication of animals
• Problems- overgrazing, logging
3. Industrial:
• Technology and factorieslarge amount of energy and
resources
• Largest increase in human
population- industrial
revolution
• Increase in pollution- air, land
and water
Human population Growth
• Exponential growth
• Advances in food production
• Germ Theory- bacteria and other microorganisms are the cause of disease
• Sterile surgery, better personal hygiene, water treatment
• Biomedical Revolution- increase in the use of vaccines and antibiotics
• The population will remain stable when birth rate equals death rate
• To decrease birth rate: later marriages, smaller families
• Strain on resources- more people means more resources are needs: space, food,
supplies
• Health problems: disease, malnutrition, poor hygiene, lack of medical facilities
• Carrying Capacity: the number of people that this earth can hold
• Factors that determine growth rate:
• Immigration- people coming into an area
• Emigration- people leaving an area
• Birth rate
• Death rate
Declines in Growth Rate:
• Cause: disease, famine, war, education, economy
• Problems: aging/declining population, decreased military, decreased
taxpayers
Controlling Birth Rate is difficult:
• Religious/personal/cultural views
Demographics:
• the study of changes and trends in the human population
• The number and types of people that make up a population
• Ex: age, socioeconomic status, education
• Population pyramid
DISEASE:
• Pathogen: a disease causing
organisms
• Examples of Pathogens: virus,
parasite, bacteria
• Diseases:
• Malaria: caused by a mosquito,
parasite- parasite (protozoa)
• Cholera: caused by
contaminated water, bacteria
• Influenza: flu, virus