Over the last 30 years eco-schools have helped us to support this ambition and provide learners with a greater knowledge of environmental issues and how they can help care for our planet.
Dros y 30 mlynedd diwethaf mae eco-ysgolion wedi ein helpu i gefnogi'r uchelgais hwn a rhoi mwy o wybodaeth i ddysgwyr am faterion amgylcheddol a sut y gallant helpu i ofalu am ein planed.