How do you use the appearance/diameter of the zone of inhibition around an antibiotic disc to determine how effective the antibiotic is?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

In an hydrogen ion pump the energy is used to join small molecules together to make larger ones which factor most likely has the greatest effect on the number of molecules mitochondria can produce

What are the methods of heat transfer? check all that apply. absorption conduction convection radiation reflection