4th Nine Weeks Exam--Environmental Factors and Body Systems

Match it! Select the correct answer from the pull down...Good luck!

What is the name of the small flap that seals off the trachea during swallowing?

Which of the following is a biotic factor that could reduce a population of frogs?

Ponds and rivers are two types of

Oxygen rich blood travels AWAY from the heart through

In a certain habitat, young deer were the main source of food for wolves. A severe snowstorm kills many of the young deer one year. Which of the following best describes what probably occurred the next year?

Which of the following is MOST responsible for making a fallen tree decay and become an important part of the soil?

What kind of motion is possible with a hinge joint?

Lichen results from a symbiotic relationship between algae and fungi. In this relationship each organism helps the other survive. This is an example of