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.
Don't know
remaining cards
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:
restart all cards
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

Rentz Ecology


Abiotic factors A nonliving part of an organisms habitat/ecosystem
Biotic factors A living or once living part of an organism’s habitat/ecosystem
Community All the different populations that live together in a particular area
Consumer An organism that obtains energy by feeding on other organisms
Decomposer An organism that gets its energy by breaking down biotic wastes & dead organisms, and returns raw materials to the soil and water
Ecosystem The community of organisms that live in a particular area, along with their nonliving environment
Energy pyramid A diagram that shows the amount of energy that moves from one feeding level to another in a food web
Food chain A series of events in an ecosystem in which organisms transfer energy by eating and being eaten
Food web The pattern of overlapping food chains among the various organisms in an ecosystem
Habitat An environment that provides the things specific organisms need to live, grow, and reproduce
Niche How an organism makes its living & interacts with the biotic & abiotic factors in its habitat
Population All the members of one species living in the same area
Predator The organism that does the killing in a predation interaction
Prey An organisms that is killed & eaten by another organism in a predation interaction
Producers An organism that can make its own food
Adaptation An inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment
Aggression A threatening behavior that one animal uses to gain control over another animal
Birth Rate The number of births per 1000 individuals for a certain time period
Carrying capacity The largest population that a particular environment can support
Circadian behavior/rhythm A behavior cycle that occurs over a period of about one day
Competition The struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time
Courtship behavior The behavior in which males and females of the same species engage to prepare for mating
Death rate The number of deaths per 1000 individuals for a certain time period
Emigration Movement of individuals out of a population’s area
Hibernation An animal’s state of greatly reduced activity that occurs during winter
Immigration Movement of individuals into a population’s area
Limiting factor An environmental factor that causes a population to decrease in size
Natural Selection The process by which organisms that are best suited/adapted to their environment are most likely to survive and reproduce
Pheromone A chemical released by one animal that affects the behavior of another animal of the same species
Pioneer species The first species to populate an area during succession
Population density The number of individuals in an area of a specific size
Primary succession The series of changes that occur in an area where no soil or organisms exist.
Society A group of closely related animal of the same species that work together in a highly organized way for the benefit of the group
Succession The series of predictable changes that occur in a community over time
Territory An area that is occupied and defended by an animal or group of animals
Species group of organisms that share most characteristics and can breed with one another
Natural hazard is a disturbance caused by nature. Ex. landslides, wildfires, and floods
Landslide is a large movement of the ground, including rock, soil, and other debris, down a slope due to gravity
Wildfire is a fire in a wild area such as a forest or a prarie
Flood where normally dry land becomes covered by water
Soil the uppermost layer of the Earth. It is a mixture of rock particles, minerals, decayed organic matter, air, and water.
Soil Horizons layers of soil
Soil Profile all the soil horizons of an area.
Sand largest particle of soil
Gravel rock particles larger that 2 mm
Silt medium size soil particles
Clay smallest size soil particles
Groundwater water that soaks into and collects underneath Earth's surface
Zone of aeration area beneath the soil's surface where water can collect
Aquifers water stored in rock layers that is often pumped to the surface for human use
Surface water water on the Earth's surface
Drainage Basin area of land that drains into a river or stream. Also known as a watershed
Natural Resources naturally occurring materials and energy that organisms use. Sunlight, water, oxygen, fossil fuels
Renewable Resource resources that can be replaced by nature. Air, freshwater, soil, living things, sunlight.
Nonrenewable resource resources who's supply can be used up or exhausted
Fossil fuels energy resources that formed from the remains of organisms that died millions of years ago. Coal, oil and natural gas.
Created by: ChadRentz