Dynamic Ecosystems

Which of the following is an example of an interaction between a living and nonliving organism?

• a snake using a mouse for food
• a worm using the soil as shelter
• a bird using an insect for food

Is fire a natural event that causes a change in the environment?

• Yes
• No

Is a hurricane a natural event that causes a change in the environment?

• yes 
• no

Is people cutting down trees a natural event that causes a change in the environment?

• yes
• no

What is a source of energy for the mouse?

• strawberries
• insects
• other mice
• owls

The parts of the food chain in the picture are out of order.  Which picture should be second in the food chain shown?

• snake
• sun
• carrot
• rabbit

The parts of the food chain in the picture are out of order.  Which picture should be third in the food chain shown?

• snake
• sun
• carrot
• rabbit

The parts of the food chain in the picture are out of order.  Which picture should be last in the food chain shown?

• snake
• sun
• carrot
• rabbit

Which is a biotic factor?

• Fox
• Mountain
• Air
• Sunlight

An individual living thing is a/an __________.

• habitat
• ecosystem
• organism
• population