3.1 Population Dynamics
When people move INTO a population
Immigration
Define sustainability
responsible use of resources
Definition of pathogen
microorganism that causes disease
Define renewable resource
natural resource that can replenish itself over time
can be used for long-term use
Primary purpose of Clean Water Act
regulate pollutants released into U.S. waters
Examples include food scarcity, disease, and lack of space
Limiting factors
A consequence of unsustainable resource use
reduced water availability
increased air pollution
decreased soil quality
decreased nonrenewable resources
Factors that allow disease to spread faster
high population density
heat
no vaccinations
pollution
An example of nonrenewable resource
coal
natural gas
oil
fossil fuels
Primary greenhouse gas contributing to global warming
carbon dioxide
Type of environment where human population density is highest
City/Urban area
The relationship between population growth and demand for resources
As population growth increases, demand for resources increases as well
Example of biotechnology that is often found in grocery stores
GMO's (genetically modified organisms)
An example of a renewable resource
water
timber
wind
sun
Difference between point source and nonpoint source pollution
point source can be traced to a single, clearly identifiable source
nonpoint source cannot be traced to a specific cause
Type of population pyramid shape that represents a growing population
traditional pyramid shape/triangle shape
Reason why there has been an increase in renewable energy use
fossil fuels are running out
excess pollution from nonrenewable resources
renewable energy has become more affordable
more advanced technology
Th difference between social factors and genetic factors of health
social factors involve actions people choose, like smoking--they can be changed
genetic factors involve genes people are born with, like increased risk of diabetes--they can't be changed
Type of renewable energy generated from the power of waves
Hydropower
Reason for the Montreal Protocol
discovery of ozone depleting chemicals (CFC's)
Describe a decreasing population in terms of birth and death rates
death rate is higher than birth rate
Importance of the nitrogen cycle
the nitrogen cycle helps convert nitrogen into different forms that can be used for plant and animal growth
A potential negative impact of GMO's
decreased biodiversity
possible disruptions to the ecosystem
ethical dilemmas
corporate greed
Nonrenewable resource that contributes the largest amount of pollution in the environment
Fossil fuels
Define biodiversity
variation of species on earth