A) What is crop rotation? B) State four uses of a mammal. C) An object of mass 45kg is placed at a height of 5m above the ground. What is the potential energy of the object? (take g = 10m/s2)

Okay, Leticia, let's continue with the questions. The question asks to state four applications of pressure in everyday life. Here are four applications of pressure: 1. Cutting tools: Knives, scissors, and axes have sharp edges to concentrate force over a very small area, creating high pressure to cut through materials easily. 2. Syringes and pumps: These devices use pressure differences to draw in or push out liquids. For example, a syringe plunger creates low pressure to draw medicine in and high pressure to inject it. 3. Walking on snow/sand: Snowshoes or wide tires on vehicles increase the area of contact, reducing the pressure exerted on the surface, which prevents sinking. 4. Hydraulic systems: Car brakes, lifts, and jacks use hydraulic fluid to transmit pressure. A small force applied over a small area can generate a large force over a larger area, due to Pascal's principle.