Study of Relationships
Biotic and Abiotic Factors
Food Chains and Webs
Cycling of Matter
Energy in Ecosystems
100

What is the study of organisms and how they interact with their environment?

Ecology
100

What do you call the living parts of an ecosystem?


Biotic
100

A sequence that links species by their feeding relationships is called what


Food Chain
100

The circular pathway of water on Earth form the atmosphere to the surface and below the surface and back again is known as what?

Hydologic cycle
100

Organisms that get their energy from nonliving resources are called what?


Producers
200

What do you call a group of different species that live together in one area?

Community
200

What do you call the nonliving parts of an ecosystem?


Abiotic
200

What do you call the model that shows the complex network of feeding relationships and the flow of energy within an ecosystem?

Food web
200

What do you call the process that bacteria use to change gaseous nitrogen into ammonia?

Nitrogen fixation
200

What is another name for a producer?

Autotroph
300

What do you call all the organisms as well as the environment in which they live?

ecosystem 
300

What do you call the assortment, or variety of living things in an ecosystem? 

Biodiversity
300

What organism is always at the beginning of a food chain?

Producer
300

What do you call the movement of a particular chemical through the biological and geological parts of the ecosystem?

A biogeochemical cycle
300

Organisms that get their energy by eating other living or once living resources are called what?

Consumers
400

What is a major regional or global community or organisms called?

Biome
400

What do you call a species that has an unusually large effect on its ecosystem?

Keystone species
400

What do you call an organism that eats a variety of other organisms?

Generalist
400

In the carbon cycle, carbon cycles from plants to animals and back again by what two processes?

Photosynthesis and respiration
400

Almost all producers obtain energy from what source?


Sunlight
500

What three ecological research methods were discussed in this chapter?

Observation, experimentation, and modeling
500

Which part of the Earth has the greatest biodiversity?


Around the equator
500

What do you call the levels of nourishment in a food chain or web?

Trophic levels
500

Which chemical cycle does not include that atmosphere as part of its cycle?

Phosphorous
500

The process by which an organism forms carbohydrates using chemical, rather than light, as an energy source, is called what?

Chemosynthesis