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Glossary Title
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Ecosystem
community of organisms and their environment in which they live and interact

Ectothermy
a characteristic in which body temperature is mainly regulated by the external environment; cold-blooded

Embryo
animal in process of development from federalized ovum

Esophagus
the tube between the pharynx and the stomach; carries food to the stomach

Eyed eggs
fish eggs at the stage of incubation where eyes if the fish are visible

Excretion
the removal of waste products from the body

External fertilization
release of sperm and eggs outside the body; contributes to lower rate of actual fertilization

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