Ejercicio B.3 · Inglés PAU Madrid Ordinaria Martes 2020

TEXTO B

The Carbon Footprint of your Inbox

Your annual work email could be adding the same amount of warming carbon dioxide to the atmosphere as a flight between London and Bruges. Email has a carbon footprint because of the power demands to create and run the computers, servers and routers that transmit each message.

The average email reportedly adds an extra 4 grams of carbon dioxide into the atmosphere – but this can increase 12 fold in email chains or with big attachments. Office workers on average process over 34,000 emails each year and can spend around 13 hours a week working on their inboxes. “This amount of carbon dioxide is equivalent to a customer having used 16,800 plastic bags in a single year,” a spokesperson for CWJobs said.

Not every email is equal, however, as adding a single 1MB attachment is predicted to raise its carbon output up to 19 grams. Larger attachments use up more energy in turn. “A particularly long email chain produces more than just hot air – it can generate as much as 50 grams in CO2 emissions,” CWJobs said. With global email traffic predicted to rise by 18 per cent in 2023, it would result in an extra 620 million tonnes of carbon dioxide each year.

A series of recommendations for how people can cut down on their communicative carbon footprints have also been published. These include only adding necessary people in email chains, replacing attachments with links to material online, and talking to people in person. In addition, due to the European Union’s General Data Protection Regulation, the total number of unwanted emails have been reduced by 1.2 billion messages a day, which is the equivalent of 360 tonnes of carbon dioxide emissions cut every single day.

Adapted from “How big is the carbon footprint of your inbox?” Daily Mail, 8 July 2019. < https://dailym.ai/2tww2ws >

B.3 (1 punto) Find the words in the text that mean:

a)

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c)

d)