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Relationships in Ecosystems
Chapter 1, Lesson 2
18
Science
5th Grade
09/22/2014

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Term
population
Definition
all members of a single species in an area at a given time
Term
community
Definition
all the living things in an ecosystem
Term
ecosystem
Definition
all living and nonliving things in an environment
Term
food chain
Definition
the path that energy and nutrients follow in an ecosystem
Term
producers
Definition
organisms that use the sun's energy to make their own food in the form of sugar
Term
consumers
Definition
any animal that eats plants or other animals
Term
herbivores
Definition
animals that eat producers
Term
carnivores
Definition
animals that eat other animals
Term
onmivores
Definition
animals that eat both plants and other animals
Term
decomposers
Definition
break down dead or decaying plant and animal material
Term
scavengers
Definition
consumers that eat leftover bodies after they have started to rot
Term
food chain
Definition
a network of food chains that have some links in common
Term
predator
Definition
an animal that hunts other animals for food
Term
prey
Definition
organisms that are eaten by other animals
Term
mutualism
Definition
a symbiotic relationship that benefits both organisms
Term
symbiosis
Definition
a relationship between two or more organisms that lasts over time
Term
commensalism
Definition
a symbiotic relationship that benefits one organism without harming the other
Term
parasitism
Definition
a symbiotic relationship where one organism benefits and the other is harmed
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