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22-3: Interactions Within an Ecosystem
Niche
Every organism has a niche.
A niche is _____________________________________.
A synonym for niche is ______________.
What is your niche:
 at home?_______________________________
 at school?_______________________________
 at practice? _____________________________
Types of interactions
 __________________
 __________________
 __________________
Competition
 ____________________________________________________________
 Resources include: food, water, and shelter
Competition: How Adaptations Help
A characteristic that helps an organism survive _________________________.
Predator Adaptations—help to capture
Prey Adaptations—help to escape
Lion- __________________
Bird- __________________
Alligator- _______________
Cat- ___________________
Human-________________
Gazelle- _______________
Zebra-_________________
Tree Frog- ______________
Humans-________________
Bird-___________________
Porcupine - ____________
Skunk- ________________
Turtle- ________________
Predation
An interaction in which _______________________________________________.
 Predator--organism that does the _________
Prey--the organism that is ______
Symbiosis is a close relationship between two species that ___________________________.
1-Mutualism : A relationship in which ______________________________.
2-Commensalism: A relationship in which _________________________________________
_________________________________________________________.
3-Parasitism: involves one organism ____________________________________________.
_________: organism that benefits
_______: organism that is being harmed.