Bees have exoskeletons, not shells. For its size, the bee's exoskeleton is very hard, but a human could easily crush it, so, in that sense, it is not very hard.
Leathery shells = Hard shells
Not that hard where your teeth will brakeJust hard
Yes. Penguins are birds, and birds reproduce by laying eggs with hard shells. This is different from the eggs of reptiles and monotremes, which have leathery shells.
to protect them
lhve a soft body that is protected by two bluish-hard shells
On the Up - 2007 Hard Sell 4 Hard Shells - 1.73 was released on: USA: 24 July 2007
hard shells
For the protection of the reptile
the answer is yes
The sediments that do consists of mostly microscopic shells and hard parts of organisms is Clay.
The sediments that do consists of mostly microscopic shells and hard parts of organisms is Clay.
Land dwelling animal's eggs have shells (hard or soft) to keep them from drying out. Fish eggs don't need shells because being in water they won't dry out.