Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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
edit
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

Ecology Pratt

Chapter 3

QuestionAnswer
What is Ecology the scientific study of interactions among organisms between organisms and their environment.
What is the Bio Sphere? contains combined portions of the planet in wihch all life exists: including land, water, and air or atmosphere.
What do you call a group of organisms so similar to one another that they can breed and produce fertile offspring? Species
What are populations? groups on individuals that belong in the same species and live in the same areas.
What are assemblages of different populations that live together in a defined area? Communities
What is an ecosystem? a collection of all organisms that live in a particular place.
What are Autotrops? Organisms that use energy from the environment to fuel the assembly of simple inorganic compounds into complex molecules.
organisms that rely on other organisms for their energy and food supply are called... hetertotrophs
What is a food web? links all the food chains in an ecosystem together.
Each step in a food chain or food web is called a... trophic level
What is biomass? Usually expressed in terms of grams of organic matter per unit area.
Elements, chemical compounds,and other forms of matter are passed from one part of the biosphere to another through... biogeochemical cycles
When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly, this substance is called... limiting nutrient
Created by: spratt
Popular Biology sets

 

 



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