Niche
Where an organism lives and works
Example: pond

Competition-
Compete for food, water, shelter, or light

Predation
Predator- prey relationship
One animal preys on another

Predator?
Prey?

Symbiotic Relationships

symbiosis- a relationship between two different species

Commensalism

Parasitism-
one benefits and one is harmed in the relationship

Mutualism-
Both benefit from relationship

Examples

• Tick and a dog
• Cow and cow bird
• Pilot fish and a shark
• Bacteria in our stomach

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