Because there is no record of all things. As we have partially unknow information, it can never be held as a fact.
        
             
        
        
        
Answer:
Electromagnetic are produced by gases and air and so much many things
Explanation:
Science teacher said I did awesome
 
        
             
        
        
        
Answer:
42.0×10² second²
Explanation:
Here, time is given in milisecond
(64800 ms)²
= 4199040000 ms²
The SI unit is seconds
1 second = 1000 milisecond



42.0×10² second²
 
        
             
        
        
        
Blood cell : Eukaryotic cell
and
Bacteria : Prokaryotic cell.
        
             
        
        
        
Answer:
 
“We have a brain for one reason and one reason only, and that's to produce adaptable and complex movements,” stated Wolpert, Director of the Computational and Biological Learning Lab at the University of Cambridge. ... The evidence for this is in how well we've learned to mimic our movements using computers and robots.