Term
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Definition
| An assemblage of all the populations of organisms living close together for potential interactions. |
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Term
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Definition
| Describes the variety of different kinds of organisms that make up an eco-system. |
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Term
| What are the two parts of bio-diversity? |
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Definition
- Species richness: total number of species in a community
- Relative abundance: the amount of a single species.
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Term
| What are the (3) properties of community? |
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Definition
- Bio-diversity
- Prevalent form of vegitation
- Response to disturbances (fire, flood...)
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Term
| Which eats the other? Predator/Prey |
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Definition
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Term
| What is a tick an example of when speaking of relationships? |
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Definition
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Term
| What are (3) examples of defensive adaptations? |
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Definition
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Term
| Given example of Batesian mimicry. |
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Definition
| A palatable/harmless flower mimics a unpalatable/harmful flower. |
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Term
| Example of mullerian mimicry. |
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Definition
| Two bees of different species mimic each other (shape/color) |
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Term
| Example of a "keystone species" and why is it so. |
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Definition
| Orca whale, because they control the population of tertiary consumers. |
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Term
| What is the effect of a lack of a keystone species? |
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Definition
| Other species in the food chain can overproduce. |
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Term
| Define a symbiotic relationship. |
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Definition
| Interaction between two or more species that live together in direct contact. |
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Term
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Definition
| When one partner benefits without significantly affecting the other. Ex. barnicles on whales. |
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Term
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Definition
| When both species benefit. Ex. oxen cleaned of bugs by birds. |
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Term
| Give (4) examples of disturbances. |
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Definition
- Storms
- Fires
- Floods
- Overgrazing
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Term
| What is ecological succession? |
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Definition
| When a different species thrives after a large disturbance. Ex. Nukes and cockroaches. |
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Term
| What is the difference between primary and secondary succession? |
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Definition
| Primary is the succession when there was virtually no life before. Secondary is when disturbance destroys an already active community. |
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Term
| Why is a fire in a pine forrest likely to destroy mature trees if it occurs in a area that has been protected from fire for many decades? |
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Definition
| Since fuel accumulates on the ground in the form of un-decomposed materials... the fire is hot enough to destroy mature trees. |
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Term
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Definition
| A biotic community and the abiotic environment with which it interacts. |
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Term
| What is an example of a producer? |
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Definition
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Term
| Who is the consumer of all life in the food chain? |
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Definition
| Detritivores (decomposers) |
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Term
| What is the amount of living organic material in the ecosystem called? |
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Definition
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Term
| Why is a pound of bacon so much more expensive than a pound of corn? |
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Definition
| It takes 10 lbs of feed corn to produce 1 lb of bacon. |
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Term
| How many more times of energy is needed to produce the meat we eat rather than the plants themselves? |
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Definition
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Term
| Give (4) examples of abiotic reservoirs. |
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Definition
- water vapor over the sea
- water vapor over the land
- surface and ground water
- oceans
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Term
| How does the movement of chemicals in an ecosystem differ from the movement of energy? |
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Definition
| Chemical are recycled between abiotic reservoirs and organic matter. |
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Term
| What drives the global water cycle? |
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Definition
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Term
| How much wood could a woodchuck chuck if a woodchuck could chuck wood? |
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Definition
| 4-5 cords depending on the pay. |
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Term
| What would happen to the carbon cycle if all the detritivores stopped working? |
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Definition
| Carbon would accumulate in organic mass, the atmospheric reservoir of carbon would decline, and plants would be starved of CO2. |
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Term
| What are nitrogen-fixing bacteria? |
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Definition
| Bacteria that change nitrogen into usable form for plants. NO3 and NH4. |
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Term
| What is the main abiotic resevoir of nitrogen? |
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Definition
| The atmospheric supply of N2. |
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Term
| What is the main abiotic reservoir of phosphorus? |
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Definition
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Term
| What is the relationship between the amount of trees and the amount of nitrates in the soil/water? |
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Definition
| Less trees, more nitrates and vice versa. |
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Term
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Definition
| An increase in productivity in an aquatic ecosystem. Ex. phosphates in a lake lead to overproduction of aquatic life. |
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Term
| Define a "zoned reserve". |
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Definition
| An extensive region of land that includes one or more areas undisturbed by humans. |
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Term
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Definition
| When a change in one species affects the selective force (how well they can survive) of another species. |
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