From Organisms to Biomes
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Transcript of From Organisms to Biomes
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From Organisms to Biomes
Unit Assessment 6
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From Organisms to BiomesThe simplest level in any environment is an individual organism.
A beaver
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Species The next level is
the species. A species
consists of organisms that have common features and can mate with one another.
Two different species of large cats
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PopulationThe next level
is a populationA population
consists of all the members of the same species that live in the same place.
A population of deer
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Community The next level
contains only living things.
A community includes different populations that live in the same place. A community of animals
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Ecosystem The next level
includes living and nonliving things.
An ecosystem consists of all the organisms within a community and the nonliving things with which they interact. An aquatic ecosystem
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Biome The next level is a
biome.
A biome is a region that contains groups of similar ecosystems and climates.
A Tropical Rainforest
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Biomes1. Desert2. Taiga3. Tundra4. Grassland5. Marine 6. Tropical
rainforest
7. Temperate rainforest
8. Temperate deciduous forest
9. Coniferous forest
10.Freshwater
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Biosphere All of these make
up the Biosphere. The part of Earth
that supports life.(This includes the top portion of Earth’s crust, all the waters that cover Earth’s surface and the atmosphere that surround Earth)
The living Earth
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Levels of Organization
Biome
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Living and Nonliving Factors Any living factor
in an environment is called a biotic factor.
Which include plants, animals, protists and fungi.
Living factors (biotic)
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Living and Nonliving Factors Any nonliving
factor in an environment is called an abiotic factor.
These include temperature, oxygen concentration, humidity, and the amount of sunlight
Nonliving factors (abiotic)
(Temperature)
(Sunlight)
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Living and Nonliving Factors Abiotic and biotic
factors vary from ecosystem to ecosystem.
And may also vary from time to time in the same ecosystem.
Such as the amount of rainfalland number of plants
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A Habitat The place in which
an organism lives.(A habitat provides food, shelter, best temperature and amount of moisture an organism needs to survive.)
Human habitat
Mouse habitat
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Symbiotic Relationships Not all
relationships among organisms involve food. Many organisms live together and share resources in other ways.
Any close relationship between species is called symbiosis. Wildebeest and cow birds
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Symbiotic RelationshipsA symbiotic
relationship in which both species benefit is called mutualism.
A bee and a flower
A large eel and a small fish
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Symbiotic RelationshipsA symbiotic
relationship in which one organism benefits and the other is not affected is called commensalism.
Clown fish and sea anemones
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Symbiotic RelationshipsA symbiotic
relationship in which one organism benefits but the other is harmed is called parasitism.
A mosquito
Dog ticks
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Niches
One habitat might contain hundreds or even thousands of species.
Competition for resources should make it impossible to survive.
But each species has different requirements for its survival.
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Niches
As a result, each species has its own niche.
A niche refers to how an organism survives, how it obtains food and shelter, how it finds a mate and cares for its young, and how it avoids danger.