Populations
Interactions
Human impact
Vocabulary
Trophic levels
100

This is the measure of the number of organisms living in a defined area or space. 

Population Density

100

This is a specialized area of resources that only one organism can occupy at a time. 

Niche

100
The earth's carrying capacity for humans is: 

Unknown

100

These are detritivores that break down organic matter into simpler compounds

Decomposers

100

This organism forms the base of the trophic pyramid, holding 100% of the available energy. 

Producers

200

These are the four factors that affect the size of a population

Immigration, birth, emigration, death

200

This occurs when organisms fight for the same limited resource. 

Competition

200
These resources are cleaner, causing less pollution when used, but can have an expensive initial start up due to lack of infrastructure within communities. 

Renewable resources

200

a close relationship between 2 species that live in direct contact with each other

Symbiosis

200
An Orca is an example of this level in the food web

Apex Predator

300

Unlimited resources, no limiting factors, when the sky is the limit for a population the graph will show this trend

J curve

300

This is a movie originally starring a former California Governor fighting off alien species. This is also a type of organism in an ecosystem that relies on other organisms for sustenance. 

predator

300

This is an estimate measure of the amount of land that is required to sustain a community's living habits. 

Carbon Footprint

300

accumulation of toxins in the food chain

Biomagnification

300

This organism will feed upon the producers, but will most likely be herbivorous and a prey item. They will have 10% available energy at their trophic level. 

Primary consumers

400

An S shaped curve on a graph will show this feature that is unknown to a graph depicting exponential growth 

carrying capacity

400

A symbiotic relationship can have three different labels. Properly label this type of relationship to reveal the correct response: A new organism is recorded feeding on the sebaceous glands of mammals. This organism has gone undetected for centuries due to the neutral nature of their feeding and breeding habits. 

commensalism 

400

This is a natural phenomenon that allows for life to be sustained on earth through the capturing of solar rays and even redistribution of heat energy globally. 

Greenhouse effect 

400

the nourishment levels in a food chain, usually shown in an energy pyramid.


Trophic levels

400

90% of this is lost between each trophic level, mainly as heat. 

Energy

500

Parasites and diseases move quickly throughout populations that have high numbers and close quarters. Ecologists and immunologists both agree on the name for these limiting factors.

Density dependent limiting factors

500

One organism will ALWAYS be better adapted to that niche, and the other will be pushed into another niche, or become extinct. This is an example of: 

Competitive exclusion

500

S02 and N0X react with water, oxygen, and other chemicals to form sulfuric and nitric acids. When these acids mix with atmospheric water vapor, it condenses and precipitates, forming: 

Acid Rain

500
Define the Biogeochemical cycle

the movement of a particular chemical through the biological and geological parts of an ecosystem.


500

These two animals fight for the title of apex predator in marine ecosystems around the globe. 

Orca and Great White Shark

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