The Allegheny woodrat is a North American rodent whose main source of food is acorns from the oak tree. In the last century, gypsy moth caterpillars have destroyed many oak trees in Pennsylvania. What
will happen if the Allegheny woodrat cannot find another suitable source of food?
A. Humans will have to bring in many sacks of acorns.
B. The woodrat species will all get sick.
C. The oak tree forest will become polluted.
D. The woodrat species will become endangered and perhaps extinct.

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid

Which example best describes a reflex action? a. eating food when hungry b. coughing when the throat is irritated c. bending down to lift a heavy object d. going for a walk outside