There are 7 crystalline systems.
<span>triclinic, monoclinic, orthorhombic, tetragonal, trigonal, hexagonal, and cubic.</span>
We get tired after exercise because our muscle fibers get tired very quickly. This is due to the major source of energy for the muscle tissue, called adenosine triphosphate, or ATP. As the muscles make use of this supply of energy, they get tired and fatigue.
Ethos means attribute of spirit of a era, culture, or community. Some synonyms include: <span><span>spirit, character, atmosphere, climate, mood, feeling, tenor, or essence. Hope this helped you!</span></span>
