Chapter 23 Flashcards
What is environmental science
The study of natural processes in the environment and how humans can affect them
What is the difference between a renewable and nonrenewable resource
Renewable– either always available or are naturally replaced in a relatively short time
Nonrenewable– natural resources are not replaced in a useful time frame
Classify the following as a renewable or nonrenewable resource: oil, aluminum, wind, trees, coal, cattle
Coal oil, aluminum– non renewable
Wind, trees, cattle– renewable
List two costs of drilling for oil in Alaska
Pollution and habitat destruction
List two benefits of building a recycling center in neshannock
Jobs and less litter
How are selective cutting and clear-cutting different
Selective cutting – cutting down only some trees in the forest and leaving a mix of tree sizes and species behind
Clear-cutting – cutting down all the trees in an area at once
What is the definition of aquaculture
The practice of raising fish and other water-dwelling organisms for food
What is the definition of a fishery
An area with a large population of valuable ocean organisms
What is overfishing? What happens to the fish population if this starts to happen?
If fish are caught at a faster rate than they can breed. The population decreases
Define biodiversity
The number of different species in an area
What is a species that influences the survival of many other species in an ecosystem
Keystone species
List four threats to biodiversity
Pollution, poaching, habitat destruction, and the introduction of exotic species
What is captive breeding
The mating of animals in zoos or wildlife preserves
A National park is an example of what type of biodiversity protection
Habitat preservation
How can biodiversity provide an economic benefit
Wildlife tours in rain forests, savannas, mountain ranges and other locations. Ecotourism