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... Oysters feed upon microorganism from the muck and water of the bottom and in turn are consumed by starfishes, oyster borers and mankind.

— Ann Haven Morgan Kinships of Animals and Man: A Textbook of Animal Biology (1955)

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More quotes by Ann Haven Morgan

In most cold winters there is plenty of snow, and this is the greatest aid to wintering insects.

Field Book of Animals in Winter (1939)

The kidneys (nephridia) of earthworms repeat the essentials of kidney form and function, tubules closely associated with blood and body fluid, each one a guardian of the content of the blood. There are two kidneys in nearly every segment of the earthworm ...

Kinships of Animals and Man: A Textbook of Animal Biology (1955)

Crickets.—Crickets, like grasshoppers, vary in their winter habits. Some live over the winter in the egg stage; others hibernate as nymphs. Nymphs of the field cricket, Gryllus assimilis pennsylvanicus (which has a short ovipositor), hibernate beneath stones ...

Field Book of Animals in Winter (1939)

. The power to regrow lost parts permits planaria to survive and even to multiply after injury. Three planarians may live and flourish because one was cut into three pieces. All turbellarians are aquatic. A considerable number live in fresh water and a few on moist soil. Most of them are marine.

Kinships of Animals and Man: A Textbook of Animal Biology (1955)

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