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This resource discusses the effects of gravity on animals and describes how animals have adapted by developing stronger bones, muscles and hearts.
https://web.archive.org/web/20191031172054/http://www.world-builders.org/lessons/less/les9/an_gravity.html
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ليکندرو
خور تهندرو
چُاپ تهيلُا حق
CC BY / CC BY-SA
