What is Environmental Engineering


 keeping tabs = looking after the condition and making notes 

dawn of civilisation = the beginnig of it 

fossil fuels: coal, oil, gas 

silicon = Si 

concrete = building material that is made by mixing together cement, sand, small stones and water 

payback period = the number of years required to recover the original cash investment 

churn out = produce something quickly and in large amounts 

emission = the production or sending out of light, heat, gas 

holistically = on the whole 

mind-blowing = very exciting, impressive or surprising 

assess = make a judgement about the nature or quality of somebody/something 

demolition = the act of pulling or knocking down a building 

sustainability = the use of natural products and energy in a way that does not harm the environment 

boil down to smth = make something, especially information, shorter by leaving out the parts that are not important 

deforestation = ​enlarge imagethe act of cutting down or burning the trees in an area