BBC3 年
The structure of the digestive system
Squash all the remaining moisture and nutrients out using the tea towel, just like the large intestine does. Well, okay, the large intestine doesn't use a tea towel, but it does absorb moisture ...
BBC3 年
The structure of the digestive system
Squash all the remaining moisture and nutrients out using the tea towel, just like the large intestine does. Well, okay, the large intestine doesn't use a tea towel, but it does absorb moisture ...