Not all of the members of everyday categories have the same. Most fish have gills, fins, and scales. Sharks lack the feature of scales, yet they are still categorized as fish. This is most problematic for the approach to categorization.

depends where

on my head

yes

on my legs

yes

on my

arms

yesh

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

answerhomologous structures;