Francesco Redi was the first scientist to disprove and challenge the spontaneous generation theory. He experimented on how flies distributed their eggs on the meat which caused flies to arose. Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
        
             
        
        
        
 
Examples of bacteriophages are: 1) Temperate phages (mu and lambda) 2) Filamentous and spherical phages , both having ssDNA (single stranded DNA)
 
 
        
             
        
        
        
Radioactivity was discovered in 1896
        
             
        
        
        
Answer:
True
Explanation:
Humans have 23 pairs of chromosomes, for a total of 46 chromosomes.
 
        
             
        
        
        
The correct answer should be: Bromide