1s^2
2s^2
2p^6
3s^2
3p^6
4s^2
3d^10
4p^4
I believe the answer is gills
Fish's use gills to breathe, so tadpoles should use gills too
hope this helps
(got the info from a documentary i watched a couple years ago)
Well electrons are like electricity well it is partly if it went 3 sub levels the electrons would blow up some electricty<span />
1. condensation
2. evaporation
3. precipitation
4. transpiration
5. dew