Biodiversity Test Flashcards
A — shaped curve describes the tendency of a population to grow w/out limit to its size
J
Drought is an example of a density- —– factor
Independent
Disease is an example of a density- —- factor
Dependent
A — shaped curve describes the tendency of a populations growth rate to slow or stop as resources become less available
S
How do you calculate the Population Growth Rate
Birth rate-death rate=PGR
What is the difference between renewable and no renewable resources
Renewable- can reginerate
No renewable- cannot reginerate
What effect does deforestation have on forest resources
Leads to severe soil erosion, remove habitats
What human activities have affected our water and ocean resources
Pollution, landfills, improperly discarded chemicals, overfishing, oil spills, runoff, sewage
What human activities have led to desertification
Overgrazing and farming combined with dry climates lead to desertification
What are some efforts taken by humans to reduce air pollution and acid rain
Emission control standards, clean-air regulations, electric cars
Humans use resources without harming ecosystem
Sustainable use
Total of all the variety of organisms in a specific area
Biodiversity
Protected strips of land to allow organism to move freely
Habitat corridors
Land development separates ecosystems into pieces
Habitat fragmentation
Species introduced to new habitats without natural predators
Invasive species
Breed and raise endangered species in protected habitats
Reintroduction program
Species disappears from its natural range
Extinction
Damage to habitats by air, water, or land pollution
Habitat degradation
The number of organisms a population can support over an indefinite period of time is called its —– capacityy
Carrying
Group of organisms of the same species that live in the same area
Population
Number of individuals per unit area
Population density
Occurs when individuals of population reproduce at constant rate
Exponential growth
As resources become less available the population growth rate slows or stops
Logistics growth
The number of organisms of one species that can be supported in an environment
Carrying capacity
Study of info about human populations
Demography
Refers to the number of people of each different age level
Age structure
Resources that can regenerate if they are alive, or can be replaced by biogeochemical cycles of they are nonliving
Renewable resources
Resources that cannot be replenished by natural processes
Nonrenewable resources
A way of using natural resources without depleting them or causing long term environmental harm
Sustainable development
Biodiversity
The total of all the variety of organisms in a specific area
