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Ecosystems
Unit B, Chapter 2, Carter Lomax, Mr. D.
26
Science
5th Grade
01/23/2008

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Term

COMPETITION

Definition

A CONTEST AMONG ORGANISM FOR RESOURCES

Term
SYMBIOSIS
Definition
A LONG-TERM RELATIONSHIP BETWEEN DIFFERENT KINDS OF ORGANISMS
Term

INSTINCT

Definition
A BEHAVIOR THAT AN ORGANISM INHERITS
Term
LEARNED BEHAVIOR
Definition
A BEHAVIOR THAT IS NOT INHERITED
Term

EXOTIC

Definition
NON-NATIVE ORGANISMS
Term
THREATENED
Definition
LIKELY TO BECOME ENDANGERED IF IT IS NOT PROTECTED
Term

ENDANGERED

Definition
HAVING A POPULATION SO SMALL IT IS LIKELY TO DISAPPPEAR UNLESS STEPS ARE TAKEN TO SAVE IT
Term
EXTINCT
Definition
SPECIES BECOME THIS AFTER THE LAST INDIVIDUAL IN THE POPULATION DIES
Term
INDIVIDUAL
Definition

A SINGLE ORGANISM OF A POPULATION

Term
POPULATION
Definition

INDIVIDUALS OF THE SAME KIND LIVING IN THE SAME ENVIRONMENT

Term
COMMUNITY
Definition

ALL THE POPULATIONS OF ORGANISMS LIVING TOGETHER IN AN ENVIRONMENT

Term
ECOSYSTEM
Definition

COMMUNITY OF ORGANISMS(LIVING) AND THEIR PHYSICAL ENVIRONMENT(NONLIVING)

Term

HABITAT

Definition

PLACE IN AN ECOSYSTEM WHERE EACH POPULATION LIVES

Term
NICHE
Definition
ROLE OF A POPULATION OF ORGANISMS WITHIN A PARTICULAR HABITAT
Term

PRODUCERS

Definition
ORGANISMS THAT MAKE THEIR OWN FOOD THROUGH PHOTOSYNTHESIS(PLANTS)
Term
CONSUMERS
Definition
LIVING THINGS THAT MUST EAT TO GET ENERGY(ANIMALS)
Term
DECOMPOSERS
Definition

CONSUMERS THAT BREAK DOWN TISSUES OF DECAYING OR DEAD ORGANISMS

Term
FOOD CHAIN
Definition
SHOWS HOW CONSUMERS IN AN ECOSYSTEM ARE CONNECTED TO ONE ANOTHER ACCORDING TO WHAT THEY EAT
Term

FOOD WEB

Definition
SHOWS THE RELATIONSHIP BETWEEN MANY DIFFERENT FOOD CHAINS IN A SINGLE ECOSYSTEM
Term

ENERGY PYRAMID

Definition
SHOWS AMOUNT OF ENERGY AVAILABLE TO PASS FROM ONE LEVEL OF A FOOD CHAIN TO THE NEXT
Term
Prey
Definition

ANIMALS THAT ARE KILLED AND EATEN BY OTHER ANIMALS

Term

PREDATORS

Definition
ANIMALS THAT HUNT OTHER ANIMALS TO EAT
Term

CARNIVORES

Definition

MEAT-EATING ANIMALS

Term
HERBIVORES
Definition
PLANT-EATING ANIMALS
Term
OMNIVORES
Definition

ANIMALS THAT EAT BOTH PLANTS AND MEAT

Term
DECOMPOSERS
Definition
CONSUMERS THAT BREAK DOWN THE TISSUE OF DEAD ORGANISMS
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