- How often do you clean your personal things and why?
- Do you think it’s necessary to replace things when it gets dirty? Please explain your answer.
- vast /vahst/
- humidity /HYOO-mid-i-tee/
- necessary /NES-uh-ser-ee/
- contaminated /kuhn-TAM-uh-ney-ted/
- assess /uh-SES/
[adjective] extremely big
I restored a vast amount of data in an application I installed last night.
[noun] the state or quality of being humid
Staying in a cool place decreases the humidity you feel in summer.
[adjective] needed in order to achieve something
The approval of the president is necessary to pass the bill.
[adjective] made impure by exposure to polluting substance
The milk we have is already contaminated, so I bought a new one.
[verb] to judge or decide the amount or value of something
Describing pictures is a way to assess a student’s cognitive skills.
Studies found that molds and mites were kinds of bacteria multiplying on smartphone covers. Bacteria reproduce quickly on smartphone covers because of humidity. Nobuo Hamada, a researcher from Osaka Museum of Natural History stated “I think there is no actual harm to the health, but it is necessary to pay a little consideration to cleanliness. If you regularly wipe the inside of the covers, you can drastically decrease the presence of molds.”
From March to April 2014, Hamada examined 116 smartphone covers. He used water with dissolved salt on cotton to wipe on smartphone covers. Molds and mites found in each cover were from 100 to 10,000 and 560,000 from the most contaminated one. Molds like spider-web were also noticeable in covers. Moreover, a common mold that lives indoors and outdoors like Aspergillus and Blue molds were the most detected bacteria.
Hamada also considered the span of phone covers usage which resulted to 26.4 molds for less than two years of usage and increased to 73.1 molds for two years and above. He also assessed the covers of male users which had 28.8 molds, higher than female users which had 24.0 molds. There were also 20.7 molds spotted from covers placed in baggage, 23.8 molds from covers placed in breast pockets, and 32.5 in pants.
- Based on studies, what might be living in people’s smartphone covers?
- In the article, what causes bacteria to multiply quickly?
- How many smartphone covers did Nobou Hamada check?
- According to the article, how many molds did a smartphone cover get after two years of use?
- How many molds were detected from the most contaminated smartphone cover?
- Apart from smartphone covers, where else do bacteria reside? Explain your answer.
- Aside from humidity, what could be other factors that help bacteria to reproduce quickly?
- It was said in the article that covers of smartphone should be wiped regularly to reduce the bacteria. Do you also do it? Why or why not?
- How long does it take for you to replace your smartphone cover and why?
- If bacteria can cause diseases, what is the best thing to do to eliminate them? Please explain your answer.