Adolescents and adults can perform at any of the subsequent stages.
Like many ground-nesting species, adults perform a broken-wing display to lure presumed threats away from their nest and young.
The dancers were grouped by age into children's, junior, and teen groups, while adults mainly performed schuhplattlers.
Nitke had published images on her website that were a means of alternative sexual expression: adults performing various sexual activities.
In some cases, adults aged 18 or over may perform hazardous duties.
This suggests that younger and older adults are performing these tasks differently.
Most research on memory and aging has focused on how older adults perform less well at a particular memory task.
And states could require adults to perform community service after two months on welfare.
After receiving welfare for two months, adults would perform community service unless they had found jobs.
More than 23 million adults perform regularly in a choir or chorus.