a variety of factors affect water density, mre dense water sinks, settiing up convection currents. 

Density has its own equation.

mass, volume

The water at the ocean is moved primarily by winds that blow in certain patterns because of the Earth's spin and the.

these causes currents.

oceans rivers

is an oceanographic phenomenon that involves wind-driven motion of dense, cooler, and usually nutrient-rich water towards the ocean surface, replacing the warmer, usually nutrient-depleted surface water.\

it accurs right below the cost line.

ocean , lakes

 is the apparent deflection of moving objects when the motion is described relative to a rotating reference frame.

in tornadoes the Coriolis force is negligible, and balance is between pressure

the world, ocean.

 driven by density and temperature gradients

this happenes deep in the ocean

ocean and currents

Plants and animals also add water vapor to the air by transpiration. As it rises into the atmosphere, the water vapor condenses to form clouds. Rain and other forms of precipitation return it to the Earth, where it flows into bodies of water and into the ground, beginning the cycle again.

we need this to live

oceans ,clouds

the water beneath the surface of the ground, consisting largely ofsurface water that has seeped down: the source of water in springsand wells.

most of your water that we drink comes froms from the ground.

rain, precitation

 is water on the surface of the planet such as in a stream, river, lake, wetland, or ocean

While most drinking water in the United States is withdrawn from groundwater sources, surface water remains a significant 

rivers, lakes

a shaft sunk into the ground to obtain water, oil, or gas.

people in the country use this mostly 

water, holes for water

Groundwater depletion, a term often defined as long-term water-level declines caused by sustained groundwater pumping

Many areas of the United States are experiencing groundwater

wells, safes for water.

 is the movement of saline water into freshwater aquifers, which can lead to contamination of drinking water sources and other consequences.

this is bad if it gets in  your drinking water

salt water, fresh water

a barrier constructed to hold back water and raise its level, the resulting reservoir being used in the generation of electricity or as a water supply.

we use this to make electisity.

electisity, watercontrol.

Dam removal is the process of removing out-dated, dangerous, or ecologically damagingdams from river systems.

this is bad because a lot of sediment get in the water.

rivers, lakes

The quality of freshwater at any point on the landscape reflects the combined effects of many processes along water pathways

we affect the freshwater alot by putting all the sediment in it.

river lakes

Toxic cyanobacteria are increasingly being perceived as a potential health hazard, particularly in waters used for recreation

we dont help this because we make things all around the freshwater sources.

lakes rivers, streams

pollution from industrial and sewage treatment plants, comes from many diffuse souers 

we dont know where all the pollution is coming from because there are diffent point were it is made.

cars, factories

defines point source pollution as “any single identifiable source of pollution from which pollutants are discharged

we know where this pollution is coming from.

oil spills, swage 

Secondary treatment is a treatment process for wastewater (or sewage) to achieve a certain degree of effluent quality

we need this to drink the water we have.

bleach, filters

is the final cleaning process that improveswastewater quality before

it is reused, recycled or discharged to the environment. 

this is the part  that makes us able to drink the water

heat, cleaning

thick, soft, wet mud or a similar viscous mixture of liquid and solid components, especially the product of an industrial or refining process.

its the bad part of the water cleaning

trash, waste