Found a similar question with the following choices:
a. living things and flowing water
b. climate and soil properties
c. physical setting and biological community
d. climate and landscape features
In a watershed system, the two main parts are the A. LIVING THINGS AND FLOWING WATER
Plastic, rubber, wood, and ceramics
The reproductive system is different from other body systems in that the reproductive system functions in the survival of a species while all other body systems function to ensure the survival of the individual.