Environmental issues
▪anything that occurs naturally in the environment and is used by people
Natural Resource
▪natural resources include (Name 3 things)
organisms, water, sunlight, minerals, and oil
▪occurs when a population grows in an ever increasing rate. In exponential growth the larger a population gets, the faster it grows
Exponential Growth
▪because new trees can be planted to replace trees that are cut down, forests can be
renewable resources
▪the number of different species in an area
Biodiversity
▪contamination of earths land, water, or air
Pollution
Renewable resource
▪something that is always available or is naturally replaced in a relatively short time
▪overtime, the _________________ has grown exponentially.
human population
▪the process of cutting down all the trees in an area at once
Clearcutting
▪biodiversity has ____________ value and __________ value within an ecosystem
economic and ecological
Point source
▪Specific pollution source that can be identified
Resources that are not replaced in a useful timeframe
Non-renewable resource
▪advances in _____________ and _____________ have improved human health have allowed for exponential human population growth
medicine and technology
There are two major methods of logging
clear cutting and selective cutting
Keystone species
▪a species that influences the survival of many others in an ecosystem
environmental issues follow the three general categories:
population growth, resource use, and pollution
▪means using a resource in ways that maintain the resource at a certain quality for a certain period of time
Sustainable use
▪A Marina with a large population of valuable oceangoing organisms.
Fishery
▪Selective cutting is less _____________ to the forest environment then clear cutting but it _________ more
Damaging, costs
▪Factors that affect bio diversity in an ecosystem include (Name 3)
climate, area, niche diversity, genetic diversity, and extinction
▪Pollution can be caused by wastes, chemicals, noise, heat, light and other sources it can
destroy wildlife as well as cause human health problems
Ecological footprint
▪amount of land and water that individuals used to meet the resource needs and absorb the waste they produce
▪managing fisheries for a sustainable yield include strategies such as (Name 3)
setting fishing limits, changing fishing methods, developing aquaculture techniques, and finding new resources.
▪an amount of a renewable resource such as trees that can be harvested regularly without reducing the future supply.
Sustainable yield
▪the three methods of protecting biodiversity are
captive breeding, laws and treaties, and habitat preservation