Show:
The Living and Nonliving Environment
Interactions Among Living Organisms
Matter and Energy
Land and Water Environments
Unit 4 Review
100
The nonliving physical features of an environment.
What are abiotic factors?
100
Any close relationship between two or more different species.
What is symbiosis?
100
These obtain energy when they break down the bodies of dead organisms.
What are decomposers?
100
This is a cold, dry, treeless region sometimes called a cold desert where winter is 6 to 9 months long.
What is a Tundra?
100
Two factors that are transferred when a primary consumer eats a primary producer
What is matter and energy?
200
The living or once living organisms in the environment.
What are biotic factors?
200
The role of an organism in an ecosystem.  For example:  what it eats, how it gets food, and how it interacts with others.
What is a niche?
200
The water cycle is a cycle of water that involves evaporation, ____________, and precipitation.
What is condensation?
200
This is the driest biome.  It receives less than 25cm of rain each year and supports little plant life.
What is a Desert?
200
Water is transferred from one organism to another organism through ____________.
What is consumption?
300
Individual organisms of the same species that live in the same place and reproduce.
What is a population?
300
The size of a population that occupies an area of limited size.
What is population density?
300
The movement of the element carbon through Earth's ecosystem.
What is the Carbon Cycle?
300
This is the world's largest biome.  It is a cold region of cone-bearing evergreen trees.  Also called the Northern Coniferous Forest.
What is a Taiga?
300
This is the source of ALL energy on Earth?
What is sunlight?
400
The highest level of biological organization.  It is made up of all the ecosystems on Earth.
What is a biosphere?
400
The largest number of individuals an environment can support and maintain for a long period of time.
What is carrying capacity?
400
This is created by a series of overlapping food chains.
What is a food web?
400
These are microscopic organisms that include algae, plants, and other organisms.
What are plankton?
400
During this relationship, one organism is helped and the other is harmed.
What is parasitism?
500
The study of the interactions that take place among organisms and between organisms and the physical features of the environment.
What is ecology?
500
Any biotic or abiotic factor that restricts the number of individuals in a population.
What is limiting factor?
500
These are at the bottom of the food web and contain all of the energy.
What are producers?
500
The area where a river meets the ocean and contains a mixture of freshwater and saltwater. 
What is an estuary?
500
The physical location where an organism lives.  An example includes coral reefs and oak-hickory forests.
What are habitats?