Food chain is the answer.
Answer:
After nutrients are absorbed during digestion, the excretory system removes solid waste products, or feces, through the rectum. The excretory system also works with the respiratory and circulatory systems and removes carbon dioxide (CO2) from the body. The excretory system also maintains fluid homeostasis.
Explanation:
E Bipedalism is least important because two feet. The others are
important to have a brain, reproduction, vision, and motion movment.
Answer:
The vertebral column, or spinal column, surrounds and protects the spinal cord, supports the head, and acts as an attachment point for the ribs and muscles of the back and neck.
Explanation: