You could be depressed from a lot of different things, from losing your job to someone passing away
Answer:
D most likely. As the moon revolves around Earth, the different amounts of the sunlit side faces Earth
Explanation:
We never really see the other sides of the moon, it's always facing one side to us.
Answer:
the physical distance between the two genes.
Explanation:
The answer u r looking for is- D* failure of the immune system to distinguish self from nonself. Hope I’ve helped ;)