Answer:
Cell walls
Explanation:
virtually all bacteria contain peptidoglycan in their cell walls; however, archaea and eukaryotes lack peptidoglycan. Various types of cell walls exist in the archaea. Therefore, the absence or presence of peptidoglycan is a distinguishing feature between the archaea and bacteria
Answer:
gravity im not sure though
Explanation:
anthropology.................................
<span>Osteomalacia is the disease known for softening of bones in adults. This is often caused by a vitamin D deficiency. This disease in children is known as Rickets which is more severe. Some symptoms to look out for are muscle weakness, body pains, and fragile bones. This deficiency is sometimes caused by a lack of sunlight or in some cases, diet.</span>
