Teach the components of blood and their functions with this interactive Year 6 science lesson. Pupils explore red blood cells, white blood cells, platelets and plasma through engaging teaching slides ...
Justina: At any given moment, you have about five litres of blood moving around your body. Georgina: That is about eight percent of your body weight. Justina: And all of that blood is kept in motion ...
某些結果已隱藏,因為您可能無法存取這些結果。
顯示無法存取的結果