Afbeelding Bevoegdheden:

Boiling Water (https://www.flickr.com/photos/indi/2392500490/) - indi.ca - Licentie: Attribution (http://creativecommons.org/licenses/by/2.0/)

Boiling Water (https://www.flickr.com/photos/sterlic/2835202400/) - Skakerman - Licentie: Attribution (http://creativecommons.org/licenses/by/2.0/)

Condensation (https://www.flickr.com/photos/arenamontanus/2924770173/) - Arenamontanus - Licentie: Attribution (http://creativecommons.org/licenses/by/2.0/)

leaf (https://www.flickr.com/photos/acidpix/5879353117/) - acidpix - Licentie: Attribution (http://creativecommons.org/licenses/by/2.0/)

Fall Colors in Pennsylvania (https://www.flickr.com/photos/nasacommons/15473542687/) - NASA on The Commons - Licentie: No known copyright restrictions (http://flickr.com/commons/usage/)

skies (https://www.flickr.com/photos/martinduggandesign/5087398546/) - Martin_Duggan - Licentie: Attribution (http://creativecommons.org/licenses/by/2.0/)