Thursday, December 3, 2015

Excretion in plants

https://youtu.be/Nqfd7EX-y0A

Excretion in olants-part2

https://youtu.be/FGz_xeWjflw

Excretion in plants

https://youtu.be/3Y8uesMNoig

Concept of excretion.

https://youtu.be/KCZOM7LlCYo

Wednesday, December 2, 2015

CANCER

Thursday, November 26, 2015

HUMAN DIGESTIVE SYSTEM PART 2