yes but only the female ones
No, robins are classified as vertebrates as are all birds. Birds are considered as vertebrates due to their internal skeletons and backbone.
the shark
Thie Sea Robin, a marine fish, measures in at up to 16" long
if i am correct i think they have internal fertilization
yes they are poisonous. it is not very poisonous, but when cut by a sea robin it will inject a mild poison into your system.
sea star
The heat engine can convert internal energy of sea water if there is a sink at temperature lower than temperature of sea water. Since there is no such sink and hence a ship can not use the internal energy of sea water to operate the engine.
Yes
Yes they are - they have an internal skeleton.
Yes..They consume berries and other fruits, insects, and worms.
Yes, robins do and can fly.
Robins! Robins! Robins!