How can we protect our friend——Air？ by Ying Huang https://padlet.com/hy1ng2018wying/5fd60hiwl6pr Think about these two question and post your findings from the Internet. 1. What kind of harm might our friends be hurt by 2. Find ways to protect our friends from this harm en-us 2018-12-03 08:44:07 UTC 2023-02-05 21:16:50 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Hotsun.png Sample：Protect our air from factory exhaust. hy1ng2018wying https://padlet.com/hy1ng2018wying/5fd60hiwl6pr/wish/310311221
  • Factory exhaust will pollute the air.
  • Factory fuels are converted from coal to gas. At the same time, research and development of other new types of energy, such as solar energy, hydrogen fuel, and geothermal energy, will be intensified. 
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