gills
Values
[1]they take in water and break it down into hydrogen and oxygen[2]using their gills, they take in oxygen that is dissolved in water[3]they get their oxygen from the food they eat[4]they come to the surface every few minutes to breathe air into their lungs[NA(d)]don't know[NA(i)]iap[NA(j)]I don't have a job[NA(m)]dk, na, iap[NA(n)]no answer[NA(p)]not imputable[NA(r)]refused[NA(s)]skipped on web[NA(u)]uncodeable[NA(x)]not available in this release[NA(y)]not available in this year[NA(z)]see codebook
Overview
For further details see the GSS Data Explorer page for gills.
Counts by year:
| year | iap | they take in water and break it down into hydrogen and oxygen | using their gills, they take in oxygen that is dissolved in water | they get their oxygen from the food they eat | they come to the surface every few minutes to breathe air into their lungs | don't know | no answer | not available in this year | Total |
| 2008 | 518 | 137 | 1124 | 29 | 87 | 107 | 21 | - | 2023 |
| Total | 518 | 137 | 1124 | 29 | 87 | 107 | 21 | 0 | 2023 |