The New book of knowledge, Volum 11An illustrated encyclopedia containing over 9,000 articles on history, literature, art and music, geography, myths and legends, mathematics, science, hobbies, holidays and festivals, games, sports, crafts, medicine, law, government, industry, politics, and other topics. |
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Side 88
EGGS AND EMBRYOS Hens lay eggs, which make good food. Hens' eggs also
make chicks, which grow up to be either hens or cocks. Every kind of bird lays its
own particular kind of egg. This egg develops and grows into a bird of the same ...
EGGS AND EMBRYOS Hens lay eggs, which make good food. Hens' eggs also
make chicks, which grow up to be either hens or cocks. Every kind of bird lays its
own particular kind of egg. This egg develops and grows into a bird of the same ...
Side 89
a rule, eggs are laid. They may be shed in the water, as in the case of frogs and
fish. Or they may be laid on land, usually in a safe place. Most birds lay eggs in
nests and sit on the eggs to keep them warm. Reptiles, such as lizards, turtles,
and ...
a rule, eggs are laid. They may be shed in the water, as in the case of frogs and
fish. Or they may be laid on land, usually in a safe place. Most birds lay eggs in
nests and sit on the eggs to keep them warm. Reptiles, such as lizards, turtles,
and ...
Side 90
There is a great advantage in producing large-sized eggs as well as in producing
large numbers of eggs. But no animal can do both. An animal can use only a
certain amount of its body weight for making eggs, and no more. This amount
may ...
There is a great advantage in producing large-sized eggs as well as in producing
large numbers of eggs. But no animal can do both. An animal can use only a
certain amount of its body weight for making eggs, and no more. This amount
may ...
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19th century actinide series Africa Age of Exploration Akhenaten alternating current American ancient animals became began British building built called canal century changes charge chemical church cities coast coil crust developed earth earthquake East eclipse Ecuador eels eggs Egypt Eisenhower electric current electric motor electronic music electrons elements elephants elevator energy engine England English Equatorial Guinea ERBIUM Eskimos Ethiopia Europe European explosives fish flow France Greek heat important Indian Indian elephant industry iron islands kilometers kind king land language lanthanide learned light live magnet ment metal meters modern mountains move nations North ocean oxygen painted Parliament plants plate poems poet poles pollution produce promethium radio River rock Roman schools scientists Soviet Spain steam surface tion United uosipg voltage vote waves William wire wrote