Construction Risk Assessments Plus 1 PRODUCT OVERVIEW.
Construction Risk Assessments 1 PRODUCT OVERVIEW.
Bacterial Evolution First living cells were prokaryotes Single celled, NO NUCLEUS Change in Earths atmosphere 1 st living organism Archeobacteria.
Urban Water Quality. Water Quality n Pollution - any departure from “purity” –What is “purity”? –Characteristics of water –Is drinking water “pure”?
EARTH DAY. Background Before Earth Day was founded, air, water, and land pollution were rampant as industries paid little attention to the environment.
WASTEWATER TREATMENT SYSTEMS BY: AHMED ALHAMADAT.