4 ACTIVATE Follow the steps in the writing guide. WRITING GUIDE A TASK Look at the photo below and write an article about polar bears. B THINK AND PLAN Read the notes below about polar bears and match a-e in exercise 3 with paragraph titles 1-3 Paragraph 1: Introduction: Paragraph 2: Life and habitat: Paragraph 3: Problems: C WRITE Write your article and follow your paragraph plan. Use the model text and the key phrases. D CHECK . the use of because​