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| relationships in which two organisms interact and are affected; at least one organism benefits in the association. |
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| a symbiotic relationship in which both organisms benefit from the interaction. |
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| a symbiotic relationship in which one organism benefits and the other organism is not harmed or helped by the interaction. |
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| a symbiotic relationship in which one organism benefits and the organism is harmed and may die from the interaction. |
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| a diagram that shows the amount of energy that moves from one feeding level to another in a food chain or web. |
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| all the members of one species in a particular area interacting with each other |
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| an environmental condition that prevents a population from increasing |
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| the largest population a geographical area can support with the available resources |
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| the struggle between organisms to survive as they attempt to use the same limited resource |
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| a relationship between two organisms where one is hunting and killing the other for a food source |
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| The most energy is available at the producer level of the pyramid. As you move up the pyramid, each level has less energy available than the level below. This is an ____________________. |
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| The relationship between a crocodile and a plover bird that removes pieces of meat from the crocodile's mouth is an example of ________________. |
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| Mistletoe sends roots into an an oak tree draining the tree of its nutrients; this is an example of ______________. |
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| When birds follow a herd of elephants and eat the insects that were hidden in the grass is an example of ____________. |
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| The relationships which are considered ____________, at least one organism gets something it needs. |
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| ______________ happens between consumers when they fight over the same food source. |
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| carrying capacity--sentence |
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| When a population reaches a level where new member cannot be supported due to lack of resources, the area has reached its ________________________. |
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| In nature, a ____________ of animal species may increase or decrease because of the availability of resources. |
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| limiting factor--sentence |
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| A drought is an example of a ___________. This is a condition that keeps the population of frogs from increasing. |
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| A snapping turtle in a pond hunts and eats a small perch. This interaction is an example of ________________. |
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