What does it mean when a resource is economically depleted?
It's too expensive to extract
Describe the tragedy of the commons.
Overuse of a common resource
Silent Spring research DDT.
national parks/ Golden age conservation
"environment protection agency"
Put something in get more out
Example:blood clot medicine
Put something in get less out
What elements are used in a fission reaction?
What products produced?
Uranium & Petrolium
What elements are used in a fusion reaction?
What products produced?
Define half life.
The amount of time it takes a half a substance to die.
What % of energy is efficient?
make own food
ex: plants, algae
ex: deer, rabbits
ex: bears, fox
eat decomposed pieces of bodies
breaks down dead orgainisms
ex: mushrooms, worms
eat dead bodies
ex: hynea, buzzards
How may species have scientist identified?
What is a transitional zone that connects to biomes together>
ammonuia into nitrate
ammonuia omtp nitrogen gas
nitrogen to ammonuia
nitrates to nitrogen compounds
nitrogen compunds to ammonuia
Where do you tend to find Phosphorous (P)?
in water, land, rocks
NOT IN AIR!
small scale changes
large scale changes
One extreme surivives
Everyone else dies
Diversifying (disruptive) selection
where you live
your role; how you live
What % of species that have ever lived on Earth are considered extinct?
animals need fat, permafrost, extremely cold
hot, humid, lots of diversity, soil not rich in nutrients due to lack of sun
very fertile soil, lots of grass, fires that improve soil
dry, little precipitation
average rainfall, average humidity, moderate temperatures
Zones of lake from top to bottom
Where in a lake are you most likely to find decomposers?
When is a thermocline and no water overturns present?
winter & summer
When is a thermocline absent resulting in overturns?
Spring & Fall
Describe a generalist species
Easily adapts, eats whatever, has alot of offspring
Describe a specialist species
More likely to go extinct, not adaptble
species competing for one resource
blocking acess to a resource
using all resources up so nothings left
2 or more different species
one hunts and feeds on another
Define carrying capacity
maximum amount an area can hold
generalist, small, adapt easily, have lots of babies, don't take care of babies
specialist, larger, take care of babies, long life, don't adapt well
Describe the basic qualities of a mineral
solid, crystals, inorganic
What type of soil has the highest permeability
What type of soil has the highest porosity
What do teratogens do
cause birth defects
Write the formula for determining population change
(births+immigration) - (deaths+ immigration)
Stages of demographic transition
Preindustrial, Transitional, Industiral, Postindustrial
"Please take invitations proudly"
high birth rate
high death rate
Describe a person who is malnourished
drag to the bottom
long line of a bunch of bated hooks
draw string garbage bag
drags across the bottom
What % of Earth is covered in freshwater
sinking of the ground
Describe a reserve
an identified resource that can be extracted for profit
What is the depletion time
What type of coal is the most desirable? Why?
anthracites; it has low sulfer content & high heat
List the stages of coal formation from lowest heat content to highest heat content:
Pete, Lignite, Bituminous, Anthocyte
What are 2 sources of soil?
tar sand & oil shell
What two countries use coal the most?
U.S & China
Why are wind farms a problem?
interference with migration pattern of birds
Photovoltaic cells are used in what kind of energy?
What kind of energy is found underground and is usually released as heat or hot steam
Can biomass be turned into a nonrenewable resource?
What are major types of outdoor air polluntants
Carbon oxides, Sulfer oxides, CFCs, Air particles, Nitrogen oxides
What is the pH of rainwater
What are symptoms fo someone having Sick Building Syndrome
naseaua, fatigue, headache, dizziness, sneezing, couging
What are some sources of asbestos
ceiling tiles, instalation, pipes
What are some sources of formaldehyde
furniture, fabric, carpet
Why is mercury so toxic to species in aquatic environments
Why is carbon monoxide so dangerous
it replaces oxygen in the blood
Why does radon cause cancer?
What gas is slowly increasing which results in increased global temperatures
How many years does it take CFCs to get in the stratosphere?
What is the purpose of the Montreal Protocol? Is the US a part of it?
cut down CFCs; yes
What does FIFRA stand for? What does it do?
Federeal Insecticide Fungicide Rodenticide Act; regulates pesticide use
Where is most solid waste disposed of
What does the Superfund program do?
What is another name?
pays to clean up inactive or abadoned hazardous sites.
Describe the Resource Conservation and Recovery Act
companies will be responsible for any hazerdous waste they produce.
What are some factors that affect biodiversity?
temperture, pollution levels, level of evnvironmental disturbance, stability of habitat
extinct in one area
can no longer play an ecological role
no longer profitable
What kind of species are more prone to becoming extinct?
specialist, k-selective, big in body size, low reproductive
What does CITIES stand for?
What is its purpose?
Convention international trade of endangered species; to control international trade of wildlife
Who labels species as endangered?
U.S. fish & wildlife services
What does ESA stand for?
What is its job?
Endangered Species Act; protect endangered species
cut what you want
cut down trees and leave the ones with seeds
cutting it all down at once
remove mature trees within 10 years
What kind of areas do not allow road constructiion, mining and logging?
What are some causes of species loss in marine ecosystems?
pollution, habital destruction, over fishing
Mamimum sustained yield
mamimum # of fish that can be harvested
Commercial sustained yield
Ecological sustained yield
interactions & relationships of other organisms
Optimum sustained yield
take account of everything & gives room for error
What does mitigation banking do?
allows youu to destroy as long as you provide an equal area of wetland
How many people live in the US
What benefits does mass transportation provide
less pollution, less investment, less car use, less operating cost, flowing traffic
What does habitat fragmentation do to species diversity? Why?
makes it decrease because you are seperating species and taking their habitats to live in