How did you get this answer i don't get it

If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Glucose is broken down in different ways, both in the presence and in the absence of oxygen. using the table for reference, what major products are formed in each reaction set?