Question

Which pair of body systems provide the raw materials that cells need for energy?

A) endocrine - nervous
B) lymphatic - muscular
C) skeletal - excretory
D) respiratory - digestive

Answer 1

The answer is D

Step-by-step explanation:

Answer 2

D) respiratory - digestive

Step-by-step explanation:

Digestive System provides nutrients neccesary to perform life function,and the respiratory systemsupplies the oxygen necessary to break down those nutrients