News Â· 10:18 p.m. Â· July 29, 2012. Celebrity Net Worth recently compiled a list of the 20 richest living rappers. At first we were sure that reading their list was going to make us feel very, very bad about the current state of our checking accounts, but no worries â each of these rappers is so wealthy that it's impossible to put into perspective.
Definition of aquifer for English Language Learners. : a layer of rock or sand that can absorb and hold water.
Aquifers that provide sustainable fresh groundwater to urban areas and for agricultural irrigation are typically close to the ground surface (within a couple of hundred metres) and have some recharge by fresh water. This recharge is typically from rivers or meteoric water (precipitation) that percolates into the aquifer through overlying unsaturated materials.