What defines a mixture? a. can be broken down into its basic substances through physical means b. described by a chemical formula c. cannot be broken down into simpler substances d. created through a chemical reaction

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

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.

During binary fission, what events must occur before the cell splits into two new cells?