The water cycle is the moving of water from clouds to land, from land to ocean, and from the ocean back into clouds. Climate is the average of all the weather conditions in a certain place over many years. The climate in a certain place does not change very much from year to year, even though the weather may change a great deal from season to season. Temperature and precipitation are environmental variables. They determine distribution of species.
Plants seem to grow together as groups.
Maps have been made of plant growth and these have been called climate maps. The primary patters of climate are caused by fluid flow on a spinning earth differentially warmed at the equator. All fluid flow acquires angular momentum because of the spin of the earth, a result described as Coriolis force. As a result, the earthly climate is divided into large patches or cells, wet into great gyres around ocean basins, causing different climates where they approach continents and where they depart, thereby superimposing local climatic patches on the global system. Mountain ranges bar the reflected in the pattern of biomes.