biology eoc reporting category : 5. reporting category 5 ecology
TRANSCRIPT
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BIOLOGY EOC REPORTING CATEGORY : 5
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Reporting Category 5
Ecolo
gy
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Ecological Succession
Succession is the gradual changes that take place in the type of species that live in an area during a long period of time.
Pioneer species
Climax community
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TWO KINDS OF SUCCESSIONS:
PRIMARY SUCCESSION
SECONDARY SUCCESSION
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Symbiotic RelationshipsMUTUALISM
PARASITISM
COMMENSALISM
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OTHER RELATIONSHIPS IN NATURE
Predation involves an organism known as a predator that hunts and eats another organism known as its prey
Competition occurs when two or more individuals compete for the same resource, such as shelter or food
Pathogen and Host Pathogen is any organism that causes a disease in an other organism
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Food WebsFood chains show the direction in which the energy flows in an ecosystem
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LEVELS IN A FOOD WEB
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ECOLOGICAL PYRAMIDS
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RESPONSE TO EXTERNAL FACTORS
Organisms, populations and communities must respond to external factors like changes in the environment or other organisms. If an entire species is unable to respond to change, it could face extinction. EXAMPLE: Rabbits leave an area to look for grass.
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LEVELS IN AN ECOSYSTEM
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BIOMES
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ROLE OF BACTERIA
BENEFICIAL ROLES HARMFUL ROLES
Decompose organic material Spoil food
Change nitrogen form one form to another in the nitrogen cycle
Produce harmful toxins (poisons)
Some are used to make food (yogurt and cheese) and drugs (penicillin antibiotic)
Cause of shortage of oxygen in lakes where there are algal blooms (overpopulation of algae)
Help absorb nutrients in the human digestive system
Cause diseases like pneumonia and tuberculosis
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Carb
on
C
ycle
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Nitro
gen C
ycle
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