Look at the photographs and talk about them with your partner.
Four photographs showing contamination being prevented or removed in very different settings.
First, I'd like you to look at pictures B and C and talk together about why following the correct sequence is important and how demanding these procedures may be for the workers. You have about 1…
Thank you. Now look at all the pictures. I'd like you to imagine that a science museum is planning an exhibition about the invisible dangers of contamination. Talk together about educational value…
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