UNIT 9: PRESERVING THE ENVIRONMENT I. Choose the best answer to complete each of the following sentences: 1. Non-renewable energy sources are running ____. A. Up B. On C. To D. Out 2. Solar energy, air and water are _____ resources because there is unlimited supply. A. Limited B. Renewable...

UNIT 9 Exercise 1: Choose the letter A, B, C or D the word that has the underlined part different from others. Question 1: A. De plete B. e ditor C. Effe ct D. Pe sticide Question 2: A. Aqua tic B. Chemica l C. Da mage D. Ma ss Question 3: A. Po lar B. Glo bal C. Eco system D. Po llute...