Commensalism
The small dot to the right of my finger is an ant. Ants represent Commensalism because the benefit from their relationship with humans but humans are nether harmed nor benefitted. The ants are benefited because they get a food resource from the food and crumbs people leave behind.

Acid Rain
When various events in the environment cause the acidification of water, it eventually gets distributed as rain. The change in the Ph of the rain contributed to the rusting of this metal.

Biodiversity
In this particular patch of woods I counted three different species of trees. Because there is a variety of multiple trees living in this area there is biodiversity.

Secondary succession
This photo was taken after hurricane Irene so if one were to assume that the tree had been destroyed by the storm, that would make it secondary succession because the altering of the area through destruction occurred in a location where soil is present.

Climax community
This community of trees represents a climax community because the species mix of the forest is dependent on the abiotic factors that are exclusive to this region. Factors fount in the temperate deciduous forest like the one in the photo. (light, temp., rainfall, fertility, and depth of soil)

Exponential growth
These bugs are the ideal type of species for exponential growth. Because they are an R-selective species they can rapidly reproduce. If there was a large amount of available resources the bugs ability to multiply large quantities quickly, would be the ideal situation for exponential growth. 

Type 2 survivorship curve
These birds represent a type 2 survivorship curve because they die independently of age and/or reproductive ability.

Mutualism
This picture demonstrates the relationship of mutualism because the clown fish get both a habitat and protection by living in the sea anemone (bottom left), this relationship is beneficial to the anemone because any food droppings the fish leaves inside are eaten by the anemone.

Exotic species 
This bird represents an exotic species because it is native to the southern region of Brazil, but was brought up to North America. (Relatively large population in Florida)

Community
These fish make a community because there are several different species of  fish living in this one environment.

Population
Because there is a collection of fish that are all the same species; they are a population.

Eutrophication
The population of algae in this tank has reached astronomical numbers because of eutrophication. The water they live in received a high dosage of nutrients when Miracle Grow was introduced to there environment. More over, algae boom is a common result of eutrophication.

Pioneer species
The introduction of a pioneer species occurs after a primary or secondary succession. Pioneer species like the Lichen on this tree, are among the first of species to return to the area because they can survive in the initial conditions.

Principal Exclusion Principal 
The principal states that no two organisms can exploit the same niche at the same time. One can see this in the way that Adenosine is bullied and abused by Charaf (seen stomping on Adenosine's back). The two turtles are both trying to live in the same tank and live off of the same food pellets at the same time, because of this there is competition. Clearly Charaf is the better sued animal, and if it weren't for the deliberate feeding of Adenosine by you (Ms.Maddox) and other class mates, Adenosine; as the principal implies... would surly die. 

K-Selective Species
Trees are K-selected species for three main reasons, there is a long period of time before they reach reproductive maturity, they produce few offspring, and they invest a lot of time and energy into their offspring.

Limiting factor
This pineapple is food; food is a limiting factor for environments because the amount of food available determines the amount of organisms that can sustain life. Too manny organisms combined with too little food causes deaths. A population can not grow in size if there is not enough available food.

Carbon cycle
This demonstrates the carbon cycle because the decomposition of dead organisms deposits carbon into the soil. Meaning that this pile of dead wood will eventually be broken down into manny things, on of which will be carbon. That carbon will then be deposited into the soil thus contributing to the carbon cycle.

R-selective species
These bugs are an R-selective species for three reasons; they reach reproductive age early, have manny offspring,  and preform little to no parenting.

  Distribution Pattern: Clumped

These mushrooms were found all along the forest floor, but they grew in clumped groups of three or four.

 The Nitrogen Cycle

The soil in this photo contains nitrogen-fixing bacteria, which contributes to the nitrogen producing biotic community, this contributes to the nitrogen in the atmosphere.