In a water compound, what kind of charge does oxygen have?

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

According to the cladogram, which organisms have roundworms as a common ancestor?

What in scientific term why the salty popcorn causes this thirst