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...et al., 2011). The pathogens causing diarrhoeal diseases are transmitted in contaminated food and water and from hand to mouth (the faecal–oral route). A major underlying cause is the shaming fact that in 2010 around 780 million people (11% of the global population) lacked access to improved sources of drinking water (Figure 2), and 2.5 billion – 37% of the world’s...

...double whammy’, the older retired generation is anticipated to increase substantially. You have extrapolated data from a pie chart (Figure 2, and Activity 1). You have also interpreted data on a logarithmic–linear graph (Figure 11 and Activity 8). You have calculated speed using distance and time data (Activity 4). You have also carried out or watched Practical...

...double-clicking on the Excel icon on your desktop or laptop (or select Excel from your list of programs). Excel will open with a clean, new worksheet called Book 1 that contains only one worksheet (Sheet1). You can add more sheets by clicking on the plus sign at the bottom of the worksheet or spreadsheet in case one sheet becomes too small or too cluttered. This will help...