Altruistic Behavior: Altruistic behavior refers to a relationship between organisms in which they show concern for their well-being. This gall protects a tree from wasps and also keeps wasp embryos intact inside of it.
Commensalism: Commensalism refers to a relationship between two organisms in which one benefits and the other is neutral. In this photo, the plants remain neutral, but the water is being oxidized by the plants.
Competition: Competition is a contest between organisms for prosperity. In this photo, these goldfish are competing for food in the water in order to survive.
Endosperm: The endosperm is the outer shell of a plant seed that protects the embryo and provides nutrients. An example of this is sunflower seeds, which can only be consumed properly with the endosperm eliminated.
K-Strategist: K-Strategist organisms tend to be larger and more dominant and reproduce less. They tend to be predators, such as these snakes.
Mutualism: Mutualism is a relationship between two organisms in which both benefit. In this photo of an aquarium, the plants are constantly being watered, and in return, the plants oxidize the water for the fish inhabiting the tank.
Parasitism: Parasitism is a relationship in which one organism benefits while the other is negatively affected. In this photo, a mistletoe is acting as a parasite on the dying host tree.
R-Strategist: R-Strategist organisms tend to be less dominant and must utilize higher rates of reproduction, such as this mouse.
Pioneer Species: Pioneer species are organisms that tend to rise from land that has been terrorized by natural disasters such as wildfires. Raspberries were one of the first species to emerge.
Predation: Predation is an organism exhibiting dominance over others through feeding on prey. In this photo, a raven feeds on a mouse to survive.
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