forty-six layers
forty-six layers
2 layers of lipids.
71 microscopic layers
2 layers
3
there are three
The body has three tissue layers and a fluid-filled false body cavity, meaning the cavity is between the inner and middle layers rather than the middle layer and the outer layer, as it is in complex animals.
Three
2
there are 2 layers. one for each side. like a sandwich and the layers are the bread. there are two of them so they can hold together the inside :]
There are 2, surrounding a water layer.
1,000