no
When crustaceans shed their shells it is called "molting."
The dark blue clumps of oval shaped shells are called mussels.
Sedimentary.
No, they are nuts, in Hindi they are called badam
no
Yes, they are one of the hardest nuts.
I believe you may be confused. Brazil nuts are very often sold in the US with their shells intact. See the image linked below to clarify.
Nut shells that are usually broken with a nutcracker are walnuts, hickory nuts, and hazel nuts. Peanuts really do not need a nutcracker to get to the peanut inside because their shells are softer.
The best way to open Brazil nuts is to place them in the freezer. When they are frozen their shells crack easily.
It could eat insects, but it would be unable to crack the hard shells of nuts.
Their large beak allows them to crack large nuts and shells.
You can buy macadamia nuts in their shells in countries that produce them, otherwise, the heavy shells add so much to the per-kilo weight that it costs far too much to transport them. Check online; you might find retailers which sell them in their shells. If you are able to buy them you will need a special nutcracker to crack the shells, which are very hard. Retailers of unshelled macadamias might also sell appropriate nutcrackers.
they are called pitaschio nuts
Nuts and the shells of nuts cannot be digested by dogs.Dogs have a considerably smaller digestive system than humans, so nuts and nut shells may cause blockages in their intestines, leading to digestive complications. Nut products are also high in fat, which is bad for a dog but not so much of an issue for humans.Avoid feeding a dog nuts.
they traded by going over water they traded nuts shells and berries
There teeth help them eat hard shells to get to the nuts and barries.