Answer:
Reproductive System
All the body systems have one role or the other to play in digestion and absorption. Even the excretory system removes waste and toxins from the body, leaving the useful materials.
However, the reproductive system is not actively involved in digestion.
Carbon dioxide
carbon monoxide
sulfer dioxide
decline in air, land and water pollution; no one to ensure proper disposal of toxic wastes; decreased destruction of habitats; increase in species extinction
Mutations<span> are errors in codons caused by changes in nucleotide bases</span>
