Final answer:
Overland flow is water flowing over the land surface due to saturation, while groundwater and the Vadose Zone refer to water movement underground. Drainage basins are areas where water collects and drains into specific water bodies, and rainfall determines water availability. A chemograph is a graphical representation of chemical concentration in a water body over time.
Step-by-step explanation:
Overland flow refers to water flowing over the surface of the land when the soil is saturated or unable to absorb it. This can occur during heavy rainfall or snowmelt. Groundwater and the Vadose Zone are related to the movement of water underground. The Vadose Zone is the unsaturated zone above the water table where water is held in the soil. Groundwater is found below the water table and can be accessed through wells or seep into surface water bodies. Drainage basin and rainfall are related to the collection and transport of water in a specific area. A drainage basin is the area of land where water collects and drains into a specific water body, such as a river or lake. Rainfall is the primary source of water input to a drainage basin, and it determines the overall water availability in the area. A chemograph is a graphical representation of the temporal variation in the concentration of a chemical in a water body, such as a river, over time. It is useful for studying the impacts of natural and human activities on water quality.