Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
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

Environmechallenges

QuestionAnswer
Megalopolises Area where cities have grown so large they run into each other.
Developing countries Countries seeking to industrialize , but still wanting to follow traditional ways.
Developed countries The United States have long , been industrialized and can offer a higher standard of living.
Deforestation The clearing of Deforestation is one of the by-products of a growing world population.
Habitats Special environment required for particular organisms to live.
Desertification Organizing grasslands and overplanting fields leave the land exposed to erosion.
Acid rain Poisonous downpours have killed forest in both North America and Europe.
Green house effect The gases trap solar energy in the form of heat , the same way the nursery greenhouse dose.
Chlorofluorocarbons (CFCs) , the gases used in aerosols, air conditioning , refrigeration , and foam packaging , has also raised concern among scientist.
The ozone hole This hole starts to appear each August and reaches its largest size by October.
The ozone layer Absorbs most of the suns cancer - causing ultraviolet radiation.
Sustainable development Economic development that dose not limit the ability of future generation to meet their needs is known as sustainable development.
Green revolution Provided new strains of rice, corn, and other grains that have high yields.
Subsistences farmers, growing just enough food to meet their needs.
Slums The rundown , property-stricken portion of a city.
Nonrenewable resources Such as coal , petroleum, or natural gas. It takes millions of years to produce these fuels.
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

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