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Eco-Knowledge for 11-15 years old

by NMJR Laudato Si Netizen Organization
Parental attention, inspiration & teacher's guidance needed. More@https://www.pinterest.com/nmjrlaudato... @https://bit.ly/2qjgd6R @https://bit.ly/2COs2ty Learn more: Air - https://bit.ly/2OWTD
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Review on Eco-Knowledge for 11-15 years old

New MacroJobHouse Ranger
Published on Aug 18, 2018
This video is aimed at children aged between 11 and 15 and their teachers.

Air is a mixture of nitrogen, oxygen CO2 and some inert gases.

It also consists of water vapours of varying quantity.

Air also contains numerous harmful substances: natural pollutants such as dust and volcanic ash, and pollutants that are by-products of human activity.

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About NMJR Laudato Si Magnate II   Netizen Organization

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Joined APSense since, April 15th, 2013, From Metro Manila, National Capital Region, Philippines.

Created on Nov 23rd 2018 02:40. Viewed 115 times.

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