seeing as comets are just bits of huge rock. Comets can be smooth, jagged, bumy, or a combination of all 3
rough coarse bumpy irregular jagged uneven
In fact it could be smooth or bumpy, it mostly depends on what foods you eat.
Argon is a gas and, like any gas, it is neither smooth nor bumpy.
Smooth
Mean, Hard,,,
Lead has a smooth texture.
They are smooth and soft.
Slimy and smooth
no
smooth as a baies foot
Streptococcus bacteria are considered smooth because they do not possess flagella or pili that create a bumpy appearance. They generally appear as smooth, round colonies when grown on agar plates.
bumpy and smooth