Which statment best decribes how a catalyst can speed up a chemical reaction

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

What is the difference between how ionic and covalent bonds form

What are examples of the plant life and animal life that can be found in each type of terrarium