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

3

Upload: others

Post on 09-Jun-2020

1 views

Category:

Documents


0 download

TRANSCRIPT

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