Welcome Back Future Scientists!. .
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Transcript of Welcome Back Future Scientists!. .
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Welcome Back Future Scientists!
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http://www.learnnc.org/lp/pages/4769
http://www.learnnc.org/lp/pages/4769
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Part I- Introduction!
GET OUT YOUR BRAINPOP SHEETS AND ECOLOGY GO NOTES!
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Who studies Ecology? Ecologist
The study of organisms and their environment.
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Biotic FactorsLiving
(bio=life)
Example- Plants, animals, predators.
Abiotic FactorsNon-living (“a”-
opposite)
Example- Sun, dirt temperature.
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5 Levels of Ecology
5 1. Organism2. Population3. Community4. Ecosystem5. Biosphere
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1. Organism1 living thing.
Example- 1 giraffe
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2. Population2 or more of the same species
Example- 2 or more giraffes
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3. Community 2 or more different species, living
Example- Zebras, giraffes and trees
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4. Ecosystem
Living and nonliving
Examples- zebra, giraffes, tree, sun, water, dirt.
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5. BiosphereCan support life
Example: sphere- circle bio- life Eart
h!
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BrainPop!Ecosystems!!
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INTERACTIONS IN ECOLOGY
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1. COMPETITIONHABITAT
WHERE IT LIVES
EXAMPLE?IN A TREE
NICHE
• WHAT IT DOES (IT’S JOB)
• EXAMPLE?• COLLECT
ACORNS
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What reduces Competition?By having organisms with different niches
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2. PREDATOR/PREYPREDATOR
EATSExample?
PREYGETS EATEN
Example?
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Prey/Predator CyclePREY PRED PREY
PRED
WHY? (GETTING
EATEN)
(NO FOOD)
WHY? WHY?
(NO EATERS)
(HAVE LOTS OF FOOD!)
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CYCLIC REPRESENTATION OF PREY/PREDATOR RELATIONSHIP
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The cycle is:Density Dependent
Depends on the size of the population
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3. SYMBIOSISClose and often long-term interactions
between different species.
THREE different types of symbiotic relationships.
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BrainPop!Symbiosis
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MUTUALISMBOTH ORGANISMS BENEFIT
EVERYONE IS HAPPY!!!!
Example?
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Mutualism Ex.Flowers and their pollinators Honey Guide and Honey BadgerHumans and E.coli
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COMMENSALISM1 BENEFITS, 1 IS UNAFFECTED
Example?
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Commensalism Ex.Barnacles on whalesFish hitching a ride on sharksClownfish and sea anemone (could be
mutualistic)Spiders build their webs on plants
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PARASITISM1 BENEFITS, 1 HARMED
EXAMPLES?
**PARASITES MUST HAVE HOSTS- IF THE HOST DIES, SO DO THEY.**
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TicksFleasLeechMosquito