| A | B |
| How water originated | magma had H2O, released at surface |
| Aquifer | underground H2O storage thru permeable rock |
| spring | natural pool |
| groundwater discharge | flow rate of groundwater thru aquifer |
| water table | level of groundwater=atmospheric pressure |
| Factors determining transpiration rates | 1.temperature 2.relative humidity 3.air and wind movement 4.soil moisture availability 5.type of plant |
| relative humidity | amount of water vapor in the air |
| sun | energy source that drives H2O cycle |
| water shed | area of land where H2O that falls flows/drains into |
| Economic importance of ocean #1 | communication, 90% of international trade, fuel |
| Economic importance of ocean #2 | 33% humans live on coast, fuel, 15% land mass-coastal region |
| Ecological importance of ocean #1 | animal habitat, principle of precipitation, oxygen |
| Ecological importance of ocean #2 | origin of life, moderates earth's climates, currents transfer heat |