Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Stack #519901

a biodegradable material that becomes a pollutant if allowed to accumulate more rapidly than decompose newspaper
describes the depletion of a natural resource intensive cultivation of farmland that exhausts soil nutrients
the tragedy of the commons describes the conflict between what? individuals and society
a sustainable world would be characterized by what? indefinite existance of human ppulations in a healthy and prosporous condition
if supply of oil dropped and the demand remained the same what would happen? price would increase
an ecological footprint the amount of land and ocean area needed to support one person
biodiversity the number and variety of species that live in an area
what country has the largest ecological footprint? US
sunlight, air, forests, minerals, and water are what? natural resources
pollution introdustion of harmful chemicals or waste into the environment.
classification and collection of data that are in numbers is called statistics
group that doesn't recieve experimental treatment in an experiment is the control group
what kind of model would a dinasour be? physical
chance an earthquake will occur in your town in the next year is an example of risk
educational value accumulation, sharing of knowlage
prediction logical statement about what will happen
experiment procedure used to test the hypothesis
ethical/moral value what is wright or wrong
recreational human leisure activities
conceptual model a flow chart
how did the himalaya mountains form? colliding tectonic plates
what produces oxygen? plants
the ozone layer is located in the what? stratosphere
Richter scale measures magnitude of an earthquake
deep currents flow along he what? ocean floor
earth is an closed system
the boundary between warm and cold water in an ocean or lake is thermocline
a volcano is a mountain built from? magma
the transfer of energy through space is? radiation
ozone is a molecule made up of? 3 oxygen atoms
energy comes from the sun
organisms that are most likely to belong to the same species are people
what describes soil and temperture in an ecosystem abiotic factors
which is not a biotic factor in an ecosystem air
gymnosperm is plant
what kind of organisms obtain energy from producers herbivores
animals that eat meat are called carnivores
organisms that break down dead matter is called decomposers
animals without backbone invertebrate
animals with backbone vertebrates
the main factors that determine what types of plants grow in a biome is? temp. and precipitation
tropical rainforests are threatened by? deforestation and the trade of rain forest plants and animals
taiga dominated by pine trees
estivating burying in the ground
deserts are formed where? on the dry side of a mountain
canopy receives the most sunlight
how are tundra and desert biomes alike? both are dry
tundra has a layer of soil permanentely frozen beneath the top soil
biomes usually described by their vegetation
the dist. north or sounth of the equator is measured in degrees called? latitude
two main freshwater wetlands marshes and swamps
what keeps phytoplankton from sinking flagella
swamps are commonly found on flat poorly drained land
what causes most coastal pollution industrial waste and sewage
majority of marine organisms are found in shallow coastal waters
ecosystems where both fresh and salt water is present estuaries
salinity salt level
ecosystem with highest salinity salt marsh
organism produces most food in an equatic ecosyystem phytoplankton
diverse and abundant life is in what zone littoral
Created by: 123456789a