What are the possible blood types among the children of parents that are ia ib and ii?

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.

Ascientific idea becomes valid when it is what?