The key to exercise solutions in chapter CLIL 1 for the textbook Wider World 4 - Student's Book with authors Suzanne Gaynor, Kathryn Alevizos and Carolyn Barraclough from Pearson Education
Question
Read the text again. Answer the questions.
Answer
sixty-five years
the USA and Canada
hydraulic fracturing
Because it can only be released by fracturing the rock.
It is a safe, reliable and cheap way of getting essential energy; it is better for the environment, air quality and people's health than using coal.
It could cause toxic chemicals to leak into the water system; it could lead to small earthquakes; it will make large areas industrialised, noisy and busy; it uses vast amounts of water.