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:
Dichotomous keys typically stress identifying species by their scientific name, as each individual species has a unique scientific name. Dichotomous are very useful because they allow non-expert users to identify organisms by directing them to look at the known, important organisms.
Explanation:
The answer would have to be the third option "<span>Clusters and constellations." Clusters is a group of stars that is in a galaxy. Constellations is a line connected by stars to make a picture for example a kite. Galaxy's also include: planets, stars, clusters, comets, and sometimes asteroids.
Hope this helps!
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