It could be Microfilaments,<span>Intermediate filaments, or
A specific protein is Tubulin!</span>
Answer:
Chemical properties are very useful in identifying substances. However, unlike physical properties, chemical properties can only be observed as the substance is in the process of being changed into a different substance.
The respiratory system takes oxygen from the air and sends it from the alveoli to the circulatory system. The circulatory system carries the oxygen and glucose to your cells for energy. And lastly, the digestive system to carry the nutrients and remove the waste.
<span>the total amount of energy for a system stays the same, is the answer</span>