Category Archives: HOW?
145.HOW DOES AN OCTOPUS MOVE?
The octopus belongs to a group of animals called “cephalopods.” The name means “head-footed” because the foot is divided into long armlike tentacles that grow out around the head. The octopus has eight such tentacles.
Even though the octopus belongs to that part of the animal kingdom known as mollusks, it is quite different from clams and oysters, which are mollusks, too. It is more closely related to the squids.
144.HOW DO LOBSTERS GROW?
One of the most curious creatures to be found in the sea is the lobster. It is a “crustacean,” which means a hard-shelled animal, and it is related to the crawfish, the shrimp, and the prawn.
There are three species of true lobsters. American lobsters, which live all along the Atlantic coast from Labrador to North Carolina, are the biggest members of the family. Next in size is the European lobster, which is found on the eastern shores of the Atlantic. The smallest lobster is the African species found off the Cape of Good Hope.
131.HOW FAR DO BIRDS MIGRATE?
GOLDEN PLOVER
Everybody knows that birds migrate. In fact, people use the disappearance and then the re-appearance of certain birds as a sort of way of telling the change of seasons. But no one fully understands why birds make such long journeys.
We cannot explain it by difference of temperature alone. The feathery coats birds have could protect them very well against the cold. Of course, as cold weather comes there is a lack of food for the birds, and this may explain their flight to places where it can be found. But then why do they migrate north again in the spring? Some experts think there is a connection between the change in the climate and the breeding instinct.
