Food web disruption

A community of living and non-living things and their interactions with their natural environment make up a 

• biome

• ecosystem
• food web

• habitat

The largest group of organisms found in a food web would be:

• Primary Consumers
• Producers
• Decomposers
• Tertiary Consumers

In the food web diagram, what do the arrows represent?

• The life cycle of each organism

• How one organism changes to another

• How food is produced by many organisms

• The flow or transfer of energy through an ecosystem

Why might an organism have more than one arrow coming from them in a food web?

• More than one organism may eat them. 
• They may eat more than one other organism. 
• This organism gets its energy from multiple sources. 
• They have no resources available to them.

The diagram shows a food web. Which of the following gets its energy directly from a producer?

• The Sun

• Plants

• Deer

• Snake

A population of mice lives in a barn community. A cat population has just joined the community. What will happen?

• Mouse and cat populations both go up?
• Mouse and cat populations both go down
• Mouse population goes down as cat population goes up
• Mouse population goes up as cat population goes down

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source. 

If a new predator is introduced into a food web, what is a possible outcome?

• The ecosystem will remain unchanged.

• All populations will increase.

• Some populations may decrease due to predation.

• Only the predator population will increase.

In this food web, which two organisms could be harmed if the mouse population were to decrease?

• Deer and caterpillar
• Wolf and snake
• Oak and grass
• Hawk and songbird

Which change would most likely occur if all the producers in this ecosystem were removed?

• A. the mice would become the new producers

• B. all the animals would either die or move away

• C. the number of mice would increase

• D. all the animal populations would increase