Answer:
The mother can carry a full-term baby with A blood type because the mother's blood does not mix with the baby's blood, so the mother's immune system does not activate attacking the baby.
Explanation:
The reason why a mother with B blood type and A antibodies in her system can carry a full-term pregnancy is thanks to the placenta. The placenta is a shared organ between the mother and the baby. Its function is to protect the baby and produce the necessary exchanges of nutrients and wastes between the maternal blood and the baby's blood. As the two types of blood are separated, and they never get in contact during pregnancy, the immune system of the mother does not recognize the baby as a treat. The mother can have A antibodies in her plasma due to a previous pregnancy where during delivery, the two types of blood mixed, also it can be due to any contact with the A blood type. When the foreign blood enters the body, the immune system forms antibodies for it. 
 
        
             
        
        
        
 Answer:a. Retention of five functional digits on the tore and hindimbs
Explanation:
The presence of five digits or pentadactyly on the fingers as well as on the toes makes the primates distinct from other mammals. Also the keratin nails are present on each digit makes these organisms distinct from other mammals. 
The five digits on the hindlimbs helps in grip of objects and on toes helps in climbing. 
 
        
             
        
        
        
At higher concentrations, it catalyzes the collisions. think of it like a glow-stick. the smaller ones aren't a bright because less chemicals are inside the tube, but large glow-sticks are brighter, and has more chemicals contained in the tube. the correct answer is 3, the catalyst  answer. <span>At higher concentrations, product molecules are able to catalyze the reaction.
 hope this helped. good luck!
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The answer is because they are not necessary for the plant to reproduce
        
             
        
        
        
   When  sodium chloride  is formed  from a positively charged sodium atom and a  negatively  charged  chlorine  atom,  the charge  on the salt becomes  neutral   is true
  Explanation
 Sodium  ion ( positively  charged)  combine with chloride  ion ( negatively charged)  to  sodium chloride which  is neural  according  to equation below.
 Na⁺   +  Cl⁻    →  NaCl  (<em>neutral</em>) 
Equal  number  of positive  and negative  charges  add up to make neutral  Nacl therefore the statement above is true.