(Big Idea 4, #3) This river is an example of a freshwater biome. A biome is a generalized group of climax communities with similar traits and conditions, both living and nonliving, that make up the ecosystem.
(Big Idea 4, #3) These trees make up a forest, which represent a temperate coniferous forest biome.
(Big Idea 4, #3) This zoo tank represents a tropical broadleaf forest biome.
(Big Idea 4, #3) This region of grassy plains represents a grasslands biome.
(Big Idea 4, #10) A keystone species is one that has a large impact on its environment. Lions are keystone species because of their spot on the food chain. If lions were to disappear their prey would flourish and competition for food among the prey would increase greatly.
(Big Idea 4, #12) Mutualism is when organisms of two different species co-operate to a point where both organisms receive a benefit. This clownfish is protected by the sea anemone's tentacles, as most other organisms are stung by it. The anemone is protected and cleansed of microorganisms such as zoo plankton by the clownfish, that eats them.
(Big Idea 4, #13) A niche is all the aspects of a species' unique way of life. This aquatic caecilian possesses gills and is able to breathe above water. It also resembles a snake, but is a carnivorous amphibian. These are all aspects of its niche.
(Big Idea 4, #15) Parasitism is a relationship between two organisms of different species in which one benefits and the other is harmed. These leaves are eaten by bugs such as caterpillars that get energy while the plant has less stomata and less places to photosynthesize.
(Big Idea 4, #17) A population is a group of a species that live in a certain area. These trees are an example of a population that live in the same area.
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(Big Idea 4, #18) Predation is when a predator eats or attempts to eat its prey. This Cantil is a pit-viper that feeds on small mammals, reptiles, and amphibians. When it does eat these animals, it is an example of predation.
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