Which statement accurately describes the relationship between weight and mass? A. Weight is an object's mass multiplied by its diameter.
B. Mass is an object's weight multiplied by the amount of gravitational force acting on that object
C. Mass is an objects weight multiplied by its diameter
D. Weight is an object's mass multiplied by the amount of gravitational force acting on that object.

What are two reasons for why a species might disappear from the fossil record?

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature about 37 degrees celsius (98.6 degrees f)? describe what might happened the temperature decreased by 10 degrees celsius.