Explain the difference between scientific law and theory

Which of the following systems in absorbing oxygen and releases carbon dioxide

Amylase becomes denatured at a temperature of 80°c. during an experiment to study the effect of varyingtemperature on enzyme activity, amylase’s reactivity with starch was measured at body temperature (37°c), andthen again at an increased temperature of 42°c. how would this increase in temperature affect the experiment

How do you date a sample of rock that you suspect as being one of the earliest on earth