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Study Set for Unit 3 Test in Science
Terms in this set (16)
The study of how living things interact with each other and their environment.
All of the living AND non-living things in an area and how they all interact...can be as large as a forest or as small as a pond and could even be a dead log on a forest floor.
All living organisms and their relationship with other living things. Examples would be competition for food, predator-prey relationships, Parasitism, which is when an organism lives off a host organism and causes harm to that host, disease, and Herbivory, which is the eating of plants.
All non-living things, including sunlight, water, amount of oxygen, soil, and temperature. Examples of this would be sunlight, temperature, water and the amount of it available, the amount of oxygen, and types of soil.
The role or purpose that a species serves in its ecosystem. This includes all of the ways that the species interacts with biotic AND abiotic factors.
Where the species lives. The features of the habitat are determined by abiotic factors of the area, such as temperature and rainfall. These same abiotic factors can also influence the traits of the organisms that live there.
A group of organisms from the SAME species that live together in a particular habitat.
All (living) populations living together in the same habitat
From smallest to largest: Individual organism...population...community...ecosystem. This includes Competition, Predation, and Symbiosis.
Competitive Exclusion Principle
Two different species CANNOT occupy the same niche in the same place for long. The different species would compete with each other for food and resources and eventually, one species wins.
An animal that that is kills and eats another animal.
The animal that is killed an eaten.
A type of relationship where one organism lives off another organism.
The organism that supports another organism.
The organism that depends upon the host to survive.
The Three Types of Symbiosis
1) Mutualism - both organisms (host and parasite) benefit
2) Commensalism - one organism benefits and other is NOT harmed (not helped, but not harmed)
3)Parasitism - parasite benefits but the host is HARMED. The parasite does not usually kill the host, but causes it harm
The process where ecosystems SLOWLY change into balanced, self-sustaining (self supporting) communities.
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