Which came first the egg or the hen

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

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

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone