Energy and matter characterize both physical and biological systems. These systems are defined both by the types of energy and matter they contain and by how that matter and energy move through and between systems. ... This means that energy and matter can change forms but cannot be created or destroyed.
<span>The circulatory, immune, skeletal, excretory, muscular, endocrine, digestive, nervous and respiratory. those are the eight systems of the human body.</span>
Coughing can be a symptom along with shortness of breath
Carbon can form up to 4 covalent bonds
