16.5. References http://www.ck12.org
25.5 References
- John Tan (User:Johntanjm/Wikipedia). http://commons.wikimedia.org/wiki/File:2ftaquarium.jpg. Public
Domain - Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Joy Sheng. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- User:FirstPrinciples/Wikipedia. http://commons.wikimedia.org/wiki/File:Dilution-concentration_simple_exa
mple.jpg. Public Domain - Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Image copyright Sealstep, 2014. http://www.shutterstock.com. Used under license from Shutterstock.com
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- (A) Image copyright Gjermund, 2014; (B) Flickr:rocksee. (A) http://www.shutterstock.com; (B) http://www.
flickr.com/photos/rocksee/2406542538/. (A) Used under license from Shutterstock.com; (B) CC BY 2.0 - Image copyright Leremy, 2014, modified by CK-12 Foundation. http://www.shutterstock.com. Used under
license from Shutterstock.com - Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Michael Pereckas (Flickr:Beige Alert). http://commons.wikimedia.org/wiki/File:Salt_truck_Milwaukee.jpg.
CC BY 2.0 - Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0