The water cycle in my front yard would start with the transpiration process, as there's multiple trees, bushes, and vegetables, through which leaves the surplus water is released and it evaporates. Partially, there is evaporation from the water in the soil as well. Since the water vapor is lighter than the air mass it gets up into the colder parts of the atmosphere. Once it reaches the colder parts of the atmosphere the water vapor condensates. From the condensation clouds are forming, and under the influence of the gravity the drops return the surface again in the form of precipitation. Some of that precipitation gets into my yard, but it also through the process of percolation gets into the ground, where it fills the reservoirs, and through the springs that water comes out. From the springs we get water for usage in the household, including the water I use for watering the plants in the yard. The process continuous all the time in that manner.
The formula for density is the mass of an object divided by its volume. In equation form, that's d = m/v , where d is the density, m is the mass and v is the volume of the object. The standard units are kg/m³.
