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.

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


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.

Remove ads
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards




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

LJ Science vocab1-3

vocab words for PSSA science

QuestionAnswer
Ecosystem consists of a group of living organisms that interact with one another and the nonliving physical environment as one unit
Environment The total of the surroundings (air, water, soil, all wildlife) influencing each living being’s existence, including physical, biological and all other factors; the surroundings of a plant or animal, including other plants or animals, climate and location.
Homeostasis The tendency for a system by resisting change to remain in a state of equilibrium.
Abiotic nonliving physical and chemical parts of an ecosystem with which living organisms interact
Biotic interaction of living organisms with other living organisms
Biomes a large naturally occurring community of flora and fauna occupying a major habitat
Niche The role played by an organism in an ecosystem; its food preferences, requirements for shelter, special behaviors and the timing of its activities (e.g., nocturnal, diurnal), interaction with other organisms and its habitat.
Consumer organism that gets its energy & nutrients by feeding on other organisms
Decomposer organisms that break down dead organisms or waste materials
Shredder organisms that eat the tissue of other organisms; organic matter like leaves and wood/ex.) stonefly nymphs
Dichotomous it's divided into two distinct parts/ has two divisions that are sharply opposed
Pest A label applied to an organism when it is in competition with humans for some resource.
Integrated pest management A variety of pest control methods that include repairs, traps, bait, poison, etc. to eliminate pests.
Acid deposition Precipitation with a pH less than 5.6 that forms in the atmosphere when certain pollutants mix with water vapor.
Stream Order size and order of stream directly relates to the organisms that can be found in that habitat
Topographic map a map showing topographic features, usually by means of contour lines./ bumpy
Watershed The land area from which surface runoff drains into a stream, channel, lake, reservoir or other body of water; also called a drainage basin.
Wetlands Lands where water saturation is the dominant factor determining the nature of the soil development and the plant and animal communities (e.g., sloughs, estuaries, marshes).
Hydrology concerned with the properties of the earth's water, especially its movement in relation to land.
Groundwater water stored beneath the Earth’s surface in rock
Mitigation The policy of constructing or creating man-made habitats, such as wetlands, to replace those lost to development.
Lentic (still water): palustrine (pond, marsh, swamp, bog)
Lotic (moving water): riverine (river, stream)
Created by: 21jamison.lan