Oxygen is the correct answer !
Answer:
As a general rule, if you're in the Northern Hemisphere, look towards the southern skies to see the galactic core. This can be southeast (Spring), due south (Summer), or southwest (Fall) depending on the time of year. As mentioned above, Sagittarius is found nearest the galactic core.
Explanation:
An organism with a sign gene has 2 forms
The other two Domains being "Bacteria" and "Eukarya" (which includes us humans). Archaebacteria<span> are characterized by having different cell call components, coenzymes and RNA Sequences compared to bacteria. ... </span>Eubacteria<span> have a rigid cell wall. However, they can be both gram positive and gram-negative.</span>