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

7th grade biology

Eco systems and how they change.

TermDefinition
Organism A living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and maintain homeostasis.
Habitat A place where an organism or a community of organisms lives, including all living and nonliving factors or conditions of the surrounding environment.
Biotic Factor A factor created by a living thing or any living component within an environment in which the action of the organism affects the life of another organism, for example a predator consuming its prey.
Abiotic Factor A nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it
Population A group of organisms of a species that interbreed and live in the same place at a same time.
Community An interacting group of various species in a common location.
Ecosystem A system that includes all living organisms in an area as well as its physical environment functioning together as a unit.
Limiting Factor The factor that limits the reaction rate in any physiological process governed by many variables.
Producer Producers are organisms that make their own food.
Consumer An organism that generally obtains food by feeding on other organisms or organic matter.
Decomposer An organism whose ecological function involves the recycling of nutrients by performing the natural process of decomposition as it feeds on decaying organisms.
Food Chain A feeding hierarchy in which organisms in an ecosystem are grouped into trophic levels and are shown in a succession to represent the flow of food energy and the feeding relationships between them.
Food Web A graphical model depicting the many food chains linked together to show the feeding relationships of organisms in an ecosystem.
Energy Pyramid A model that shows the flow of energy from one trophic, or feeding, level to the next in an ecosystem.
Niche The way in which an organism fits into an ecological community or ecosystem.
Competition An interaction between organisms or species in which both the organisms or species are harmed.
Predation A biological interaction where one organism, the predator, kills and eats another organism, its prey.
Symbiosis A close and prolonged interaction between organisms of different species.
Commensalism An association between two organisms in which one benefits and the other derives neither benefit nor harm.
Mutualism As interactions between organisms of two different species, in which each organism benefits from the interaction in some way.
Parasitism A relationship between two organisms where one benefits, and the other is harmed.
Succession The process of change in the species structure of an ecological community over time.
Pioneer Species The first to colonize an ecosystem previously disturbed or damaged.
Created by: Julian Mcke
 

 



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