Uned 4

Atgenhedlu rhywiol mewn bodau dynol

Reproductive system – https://www.youtube.com/watch?v=QSN5gfbzgwc&t=9s

Spermatogenesis made easy - https://www.youtube.com/watch?v=QtCjQYosj_g

Basics of egg development - https://www.youtube.com/watch?v=Msrym4oGVSk

The menstrual cycle - https://www.youtube.com/watch?v=tOluxtc3Cpw&t=282s

Understanding the placenta - https://www.youtube.com/watch?v=gbextFwqnY4

Atgenhedlu rhywiol mewn planhigion

Sexual reproduction in plants - https://www.youtube.com/watch?v=R8_ScKzLAfE

Flower dissection - https://www.youtube.com/watch?v=493WeySyf-8