Ecosystems -G5

If there is more food than usual in an ecosystem, then...

• Populations will stay the same
• Populations will decrease
• Populations will increase

Living or once living things in the environment

• biotic factors
• abiotic factors
• ecology
• population

Members of the same species all living in the same area

• community
• ecosystem
• population
• biosphere

What does a limiting factor do?

• makes a population grow large
• stops a population from growing large
• helps organisms adapt to abiotic factors
• provides geographical boundaries for migration

Which graph shows a decrease in the population?

• 
• 
• 
• 

If more foxes move into the same area with rabbits. What will most likely happen to the rabbit population? (foxes eat rabbits)

• The rabbit population will not be affected

• The rabbit population will increase

• The rabbit population will decrease

• The rabbits will equal the foxes

All of the Red Oak trees growing in a forest

• Ecosystem

• Community

• Population

• bacteria

A Coyote eats a rabbit. The rabbit has eaten grass. Select how the flow of energy would look.

• Grass ---> Rabbit---> Coyote

• Rabbit<---- Grass<---- Coyote

• Coyote-----> Rabbit----> Grass

• Coyote<---- Rabbit-----> Grass

If the squirrel population increases then animals that are predators of squirrels, such as owls and foxes, will ___________________.

• increase

• decrease

• stay the same

• go extinct

Which statement BEST describes how limiting factors affect the organisms in an ecosystem?

• They destroy resources organisms need to survive.

• They provide what an organism needs to survive.

• They keep a population from getting too large.

• They have no effect on the organisms in an ecosystem.