The normal force acts to the surface the object is sitting on. at a 75-degree angle

perpendicular

parallel

at a 45-degree angle

i'm assuming that the correct answer is indeed the first one/ "a"..

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.