They do lower the activation energy but they provide an alternate pathway for the reaction to happen quicker and they do not get used up in the reaction
        
             
        
        
        
False the goal was to cover the smear if it evaporates the smear is uncovered meaning the goal wasn’t meant. It could also be true though because you could just apply more dye to cover it up. So it might be true
        
             
        
        
        
The biological species concept is the most widely accepted species concept. It defines species in terms of interbreeding. 
hope this helps. :)
 
        
             
        
        
        
Answer:
It's not possible 
Explanation:
The woman's genotype is IO IO. The man's genotype is either IB IB or IB IO, which makes it impossible to get a blood type A allele, ie, IA.
The possible outcomes for this child should've been either:
<u>IO IO × IB IB </u>
100% IB IO- blood type B
OR
<u>IO IO × IB IO</u>
50% IB IO- blood type B
50% IO IO- blood type O