To move, an animal must expend ____ to overcome the effects of ____ and friction.
A)oxygen; respiration
B)muscle contractions; fatigue
C)nutrients; motion
D)glucose; movement
E)energy; gravity

Question

Quizplus · Accepted Answer

To move, an animal must expend energy to overcome both gravity (which affects movement in any direction) and friction (which affects movement across a surface). Therefore, the best answer is E) energy; gravity. Choices A, B, C, and D are incorrect as they do not address the specific factors of gravity and friction that must be overcome for movement.

To Move, an Animal Must Expend ____ to Overcome the Effects