Answer:
A
Explanation:
It is believed that the moon was formed shortly (relative time) after the earth was newly formed. This occurred in a massive planet-sized collision that  ejected a huge chunk of the earth out into space. The chunk, still within earth gravitational reach, began orbiting the earth becoming the moon. Both earth and moon are slightly more than 4 billion years old. 
 
        
             
        
        
        
If you lose a finger, the somatosensory cortex that received its input will begin to pick up signals from the neighboring fingers. this best illustrates the concept of neuroplasticity. The neurons rewire themselves to participate in the functioning of other nearby brain regions. Another consequence of this in the experience of the presence of a phantom limb or finger. The brain activates that region to signal the muscles of the absent limb and confuses itself in the absence of any feedback from it.
 
        
             
        
        
        
Answer:
ureters
Explanation:
The ureters are two tubes that drain urine from the kidneys to the bladder. Each ureter is a muscular tube that drains into the bladder. Smooth muscle contractions in the walls of the ureters, over time, send the urine in small spurts into the bladder, the organ where urine is stored before it can be eliminated.
 
        
             
        
        
        
Answer:
   a few hours to a few days
Explanation:
Reports that a process can exist do not mention the time involved. 
In an industrial process, the length of time likely will be dominated by cleaning, bleaching, and drying times, which could be hours to days. Full-scale production would likely be more efficient if time is shorter. If "appropriate technology" is used, time could run to several days.