Drag each tile to the correct box. Place the parts of the human circulatory system in order from highest to lowest degree of internal organization. a is the heart b is what ever those 5 lines are c is the 2 lines and d is the heart now can u put them in order?

Which of the following is true of photosynthesis? a)carbon dioxide is a reactant b)water is a product c)most reactions within this process are exothermic d)oxygen is a reactant

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.

What is the difference between a scientific hypotheses and a scientific theory?