How to make our world cleaner?
we tried cleaning up around us...
https://ebcasalcomba.blogspot.com/2019/04/missao-up-saida-de-campo.html
https://ebcasalcomba.blogspot.com/2019/05/projeto-rios-monitorizacao-de-primavera.html
https://ebcasalcomba.blogspot.com/2018/12/projeto-rios.html
collect and separate at school to recycle:batteries, paper, household appliances, medicines, caps, ink cartridges, ...