Work in pairs to make this task.
Download here the worksheet. DON'T FORGET TO SAVE IT, BECAUSE AT THE END OF THE CLASS YOU HAVE TO EMAIL ME THE ANSWERS.
In the worksheet you will find a list of links. Below of each one, there is a list of questions.
For today you have to answer the questions number 4, 5, 6, 8, 10, 11, 12, 13, 14, 15, 17, 18, 23, 24, 25, 26, 27 and 28.
Once you have finished, remember to send the result of your investigation.