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.

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

Unit 1 - Ecology

TermDefinition
Biosphere Consists of all life on earth and all parts of the earth where life exists
Ecology Scientific studies of interaction among and between organisms and their physical environment
Population Group of individuals of the same species and live in the same area
Community Different populations that live together in a certain area
Ecosystem All organisms that live in a place together with their physical environment
Biome Group of ecosystems that share similar climates and typical organisms
Biotic Factor Living part of the environment which an organism might interact Examples: animals, mushrooms, plants, and bacteria
Abiotic Factor Nonliving part of the environment Example: sunlight, heat, wind, water currents, soil type, and precipitation
Autotroph Organisms that capture energy from sunlight or chemicals and convert it into forms that living cells can use; also called a primary producer
Primary Producer Organisms that store energy in forms that make it available to other organisms that eat them
Heterotroph Organisms that must get energy from other organisms by ingesting them; also called consumers
Consumer Organisms classified by the way they require energy
Niche The environment where an organism lives and how it interacts with biotic and abiotic factors
Habitat Place where an organism lives
Resource Necessities of life such as food, water, and shelter
Predation One animal capturing and feeding on another animal
Herbivory One animal that feeds on plants and other producers
Symbosis Two species that live together
Mutualism Relationship of species in which both benefit
Parasitism Relationship of species where one organism lives in or out of another and harms it
Commensalism Relationship of species where one organism benefits while the other is neither helped nor harmed
Population Density Number of individuals per unit area
Distribution How individuals in a population are spaced out across the range of the population
Age Structure Number of males and females of each age a population contains
Immigration Population that grows when individuals move their range elsewhere
Emigration Population that decreases when individuals move out of their range
Exponential Growth The larger a population gets, the faster it grows
Logistic Growth Population's growth slows then stops after a period of exponential growth
Carrying Capacity Maximum number of species a place can support
Limiting Factor A factor that controls the growth of a population
Destiny Dependent Limiting Factor Operates on population density reaching a certain level
Density Independent Limiting Factor Affects all populations in similar ways no matter how big the population
Competition Animals compete for resources to breed and create offspring; density dependent limiting factor
Biodiversity Total of all the genetically based variation in all organisms in the biosphere
Habitat Fragmentation Development splitting ecosystems into pieces
Ecological Succession A series of more-or-less predictable changes that occur in a community over time
Primary Succession Succession that begin in an area with no remnants of an older community
Pioneer Species The first species to colonize barren areas
Secondary Succession Disturbance that changes a community without removing soil; proceeds faster than primary succession
Agriculture Enables farmers to double world food production
Monoculture Clearing large areas of land to plant a single highly productive crop year after year
Renewable Resource Resources that can be produced or replaced by a healthy ecosystem Example: wind
Nonrenewable Resource Resources that cannot be replenished by natural processes within a reasonable amount of time Example: coal, oil, natural gas
Sustainable Resource Using resources in a way that does not cause long term environmental harm
Deforestation Loss of forests
Dessertification Turning farmland into desert with a combination of farming, overgrazing, seasonal drought, and climate change
Biological Magnification Occurs if a pollutant such as DDT, mercury, or PCB is picked up by an organism and is not broken down or eliminated from its body
Acid Rain Formed by burning fossil fuels releasing nitrogen and sulfur compounds which combine with water vapor in the air to create nitric and sulfuric acids
Greenhouse Gases Burning fossil fuels and forests releasing stored carbon into the atmosphere
Ecological Footprint Describes the total area of functioning land and water ecosystems needed to provide the resources an individual or population uses
Ecological Disturbance Natural disaster such as a flood or tornado
Created by: cdaoud12