The Ecological Levels of Organization of Ecosystems

The organisms most likely to belong to the same species are

• all the birds in a forest
• people at a baseball game
• bacteria inside a horse's body
• organisms in the soil

Which of the following best describes a population?

• all types of organisms living in the same place
• all the red birds in an area
• Some of the same species in the same area at the same time
• all members of the same species

Which of these is not considered to be biotic?

• a living organism
• a dead organism
• organic waste
• a large rock

Which of these is not considered to be abiotic?

• carbon dioxide
• a diamond
• sand
• E. coli bacteria

A piece of iron is...

• biotic
• abiotic

A dead anole lizard is...

• biotic
• abiotic

All of the animals, plants, fungi, and microorganisms in a forest are a(n)...

• organism
• population
• community
• ecosystem

The Sahara Desert is an example of a(n)...

• organism
• population
• community
• ecosystem

A giraffe is an example f a(n)...

• organism
• population
• community
• ecosystem

The black footed ferrets in a field in Nebraska are an example of a(n)...

• organism
• population
• community
• ecosystem