Applying Ecology
Population Dynamics
Natural Selection & Evolution
Biomes & Productivity
Hazards, Health & Human Impact
200
A fallen tree that is rotting still counts as this type of "living" factor.
Biotic factor
200
Births and immigration directly cause this population change.
Population increase
200
This condition of natural selection states that individuals are different in their traits.
Variation
200
Temperature and precipitation together determine this classification.
Biome
200
A substance that causes cancer is classified as this.
Carcinogen
400
This level of organization includes multiple populations interacting but no abiotic factors.
Community
400
Disease spreads faster in dense populations because it is this type of limiting factor.
Density-dependent
400
Traits that increase survival and reproduction are called this.
Adaptations
400
Warm, wet biomes generally have this level of Net Primary Productivity (NPP).
High
400
Chemicals that interfere with hormone systems are called this.
Endocrine disruptors
600
An ecosystem differs from a community because it includes these components.
Abiotic factors
600
Floods, fires, and droughts are classified as this type of limiting factor.
Density-independent
600
This term describes how reproductively successful an organism is.
Fitness
600
This factor most limits productivity in deserts.
Water
600
Toxins increasing in concentration up a food chain is known as this.
Biomagnification
800
A vulture’s habitat may include multiple ecosystems because habitats are defined by this.
The organism’s needs
800
A population exceeding its carrying capacity will most likely experience this.
Population decline
800
Natural selection can only occur if traits are this.
Heritable
800
Despite cold temperatures, this marine ecosystem has very high productivity.
Upwelling Zones or Kelp Forests
800
Why do affluent countries often have larger ecological footprints?
Higher consumption rates
1000
If soil nutrients are depleted but species interactions remain the same, which level is most affected?
Ecosystem
1000
A population with a narrow base on an age structure diagram is most likely this.
Declining
1000
When environments change, what happens to which traits are considered fit?
Fitness is environment-dependent
1000
Year-round warmth and heavy rainfall indicate this biome.
Tropical rain forest
1000
Why can even water be harmful at high levels?
The dose makes the poison