Animal Behavior
Population Ecology
Community & Ecosystems
Biomes & Ecosystems
Conservation Biology
100

An innate, stereotyped behavior triggered by a stimulus 

What is a fixed Action pattern? 

100

Number of individuals per unit area

What is population density?

100

A relationship where both species benefit

What is mutualism?

100

Cold biome with permafrost and no trees

What is the tundra?

100

Species at immediate risk of extinction

What are endangered species?

200

The environmental trigger of a fixed Action pattern 

What is a sign stimulus?

200

Maximum population size an environment can support

What is carrying capacity?

200

Principle stating two species cannot share the same niche

What is the competitive exclusion principle?

200

Warm, high-rainfall biome with high biodiversity

What is a tropical rainforest?

200

Destruction of natural environments

What is habitat loss?

300

Learning where response to a repeated stimulus decreases

What is habituation? 

300

Growth that slows and levels off at carrying capacity

What is logistic growth?

300

First organisms to colonize a disturbed area

What are pioneer species?

300

Sunlit open-water zone of a lake

What is the limnetic zone?

300

Harmful non-native organisms

What are invasive species?

400

Learning that pairs two stimuli together 

What is Classical Conditioning? 

400

Factors that affect populations regardless of density

What are density-independent factors?

400

Interconnected feeding relationships in an ecosystem

What is a food web?

400

Area where freshwater and saltwater mix

What is an estuary?

400

Practice of protecting and restoring habitats

What is habitat preservation?

500

Long distance movement requiring orientation and navigation

What is migration?

500

Method of estimating population using capture, tag, and release

What is the mark-recapture method?

500

Percentage of energy transferred between trophic levels

What is 10%

500

Seasonal mixing of lake layers

What is lake overturn?

500

Removing organisms faster than they reproduce

What is overexploitation?

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