Scanned by CamScanner · on earth, dust comes from everything under the sun: minerals, seeds,...

3

Transcript of Scanned by CamScanner · on earth, dust comes from everything under the sun: minerals, seeds,...

Page 1: Scanned by CamScanner · on earth, dust comes from everything under the sun: minerals, seeds, pollen insects, moulds, lichens and even bacteria. Its sources also include bone, hair,

Scanned by CamScanner

Page 2: Scanned by CamScanner · on earth, dust comes from everything under the sun: minerals, seeds, pollen insects, moulds, lichens and even bacteria. Its sources also include bone, hair,

Scanned by CamScanner

Page 3: Scanned by CamScanner · on earth, dust comes from everything under the sun: minerals, seeds, pollen insects, moulds, lichens and even bacteria. Its sources also include bone, hair,

Scanned by CamScanner