printer,main memory
for drinking water
They are rocks in the ground that filter water, and you use them by drinking from them!
They are rocks in the ground that filter water, and you use them by drinking from them!
an energy source
Riding and Driving
Water in aquifers depletes when people use the water faster than its replenishment rate. Some water is also lost due to evaporation.
Underground water is available for home use and irrigation.
For electricity it is still coal, for transport it is oil
Wells are drilled down to underground aquifers. Aquifers are underground layers/pockets of water. This water can be extracted using a (water) well. For more information check out: http://water.usgs.gov/
Text, E-Mail and Kik are the main use's of communication through technology today.
In the beginning, the main purpose for rockets was for use in warfare. Today there is 2 main purposes, the first being exploration. The second being warfare.