The place where an organism lives is its __________.

• habitat
• ecosystem
• organism
• population

A group of organisms of the same species living in the same area are called a/an __________.

• community
• habitat
• population
• ecosystem

All of the living AND non-living things in an area that interact with each other are called a/an __________.

• community
• habitat
• population
• ecosystem

A group of different species that live together and interact in an environment are called a/an __________.

• community
• habitat
• population
• ecosystem

ALL energy flow for an ecosystem begins with ...

• plants
• the moon
• the sun
• algae

Which is an example of an ABIOTIC factor?

• hummingbird
• water
• dead tree branch
• skunk

Which is an example of a BIOTIC factor?

• lightning
• algae
• sand
• clouds

A relationship where both organisms benefit is called __________.

• mutualism
• commensalism
• parasitism

A relationship where one organism benefits and one organism is unaffected is called __________.

• mutualism
• commensalism
• parasitism

A bird hitches a free, safe ride on the back of a grey elephant. The elephant doesn't seem to mind and barely notices the bird. Which type of relationship is this?

• mutualism
• commensalism
• parasitism