The normal human body temperture for adults is around 37°C. Which temperature and pH profile curves on the graphs in the figure were most likely generated from analysis of an enzyme from the human stomach, where conditions are strongly acidic?

Please help!!

A. Curve 1
B. Curve 2
C. Curve 3
D. Curves 1 and 2

1.989×10^30 kg is the weight of the sun.

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on