Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
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.
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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

PCS Liv Env

Vocabulary for Topic 7 - Human Impact on Ecosystems

Carrying Capacity the largest population of any single species that survives by eating animals
Deforestation forest destruction that results from human activity
Direct Harvesting the destruction of an organism, or the removal of an organism from its habitat
Energy Flow the movement of energy through an ecosystem
Fossil Fuel a fuel, such as coal and gas, that comes form the remains of organisms that lived millions of years ago
Global Warming an increase in Earth's average surface temperature caused by an increase in greenhouse gases
Industrialization the process of converting an economy into one in which large-scale manufacturing is the primary economic base
Nonrenewable Resource any resource, such as fossil fuels and minerals, that cannot be replaced
Nuclear Fuel an energy source that results form splitting atoms
Ozone Shield the layer of ozone gas in the upper atmosphere that protects Earth from some of the sun's radiation
Pollution a harmful change in the chemical make-up of the soil, water, or air
Renewable Resource Earth's resources, such as our food supply and solar energy, which can be replaced
Technology all of the practical scientific knowledge that has been used to meet human needs
Trade-Off an exchange or agreement made to reach a compromise
Water Cycle the process by which water continuously moves from Earth's surface to the atmosphere and back
Created by: Ms.Sala



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:
restart all cards