BIOLOGY

CHAPTER 33

SCOPE OF ECOLOGY

• Population
• Community
• Relationships
• Individuals

ECOLOGICAL SUCCESSION

• Primary-Natural Disasters lead to slow erosion
• Secondary-Happens only when primary succession is interrupted but unchanged

MUTUALISM

• A relationship between two species where both benefit in some way

COMMENSALISM

• A mutual relationship between organisms
• Both species neither benefit or are harmed
• Mutual existence without conflict (normally)

PARASITISM

• A relationship between two organisms
• One organism harms the other

CHAPTER 34

ECOLOGICAL PYRAMID

TROPHIC LEVEL

• Heterotrophs
• Autotrophs
• Hierarchy levels of the ecosystem
• Groups organisms that perform the same function together
• Groups organisms with same nutritional relationships together

DECOMPOSER

• Eats Waste products and dead organisms
• Cleans the environment so waste doesn't build up

PRODUCER

• Autotrophs
• Plants who provide food for other animals

CONSUMER

• Predator,Omnivore,Herbivore
• An organism that feeds on other organism

THE END