Like the eggs of all amphibians, frog eggs have no outer shell to protect them from the outside; they are completely soft and jelly-like. Because of this, the eggs need to be laid in the water. If they were in the air, they would dry out an...
http://wiki.answers.com/Q/Why_must_a_frog_lay_its_eggs_...
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Frogs lay their eggs in water or wet places. A floating clump of eggs is called frog spawn. ... The tadpole has a long tail, and lives in the water. It is extremely vulnerable, and must rely on its camouflage to protect it. The tadpoles also face danger by being eaten by other water animals. Sometimes the pond dries up.
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www.tooter4kids.com/Frogs/life_cycle_of_frogs.htm
www.tooter4kids.com/Frogs/life_cycle_of_frogs.htm
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In order to have young, the adults must reproduce. In order to find a mate or ... In the spring, the adult frogs of a population will move towards water in order to mate. The frogs know instinctively to return to a specific body of water to lay their eggs. This instinct will cause the frogs to take risks to get to the water.
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www.saburchill.com/hfns02/chapters/chap017.html
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Frogs, toads, and most salamanders lay their eggs in water and spend the early part of their lives as gill-breathing larvae or tadpoles. ... Most females lay their eggs in June, and the young are hatched in late summer or fall. Because hatchlings may overwinter in the nest, the nest site must remain undisturbed all year.
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www.michigandnr.com/publications/pdfs/huntingwildlifeha...
www.michigandnr.com/publications/pdfs/huntingwildlifehabitat/Landowners_Guide/Species_Mgmt/Frogs_Turtles_Snakes.htm
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Frogs live in and near water. Besides the fact that they need the moisture just to stay alive, frogs must lay their eggs in water or very moist areas. Sylvia has discovered that much of the pollution affecting frogs has seeped into the watershed from the ground and others have entered water sources through drainage.
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warrensburg.k12.mo.us/iadventure/frogalert/story3d.html
warrensburg.k12.mo.us/iadventure/frogalert/story3d.html
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1. a small, leaping amphibian with webbed feet that lives in or near water. They are usually tailless and have a smooth skin and powerful hind legs for leaping. A frog is more agile than a toad. Frogs lay jellylike clusters of eggs in the water which develop into tadpoles in the larval stage until they grow legs.
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www.teacherwebshelf.com/classroompets/amph-frogs.htm
www.teacherwebshelf.com/classroompets/amph-frogs.htm
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To test if genetic differences made frogs lay eggs in water or on land, or if instead their different environments affected egg-laying choices, Touchon and Warkentin built miniature ponds in an open field and in the forest.
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www.sciencedaily.com/releases/2008/05/080520090608.htm
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Life cycle: Like all amphibians, frogs spend their lives near water because they must return to the water to lay their eggs. Frog eggs are laid in the water. When they hatch into tadpoles, they breathe with gills and swim using a tail.
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www.enchantedlearning.com/subjects/amphibians/Frogprint...
www.enchantedlearning.com/subjects/amphibians/Frogprintout.shtml
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All frogs and toads, however, must eventually come back to the water to mate and lay eggs. ... Amphibian eggs do not have a hard protective shell like bird or reptile eggs. Frogs and toads lay eggs in jelly-like masses, and unless the eggs are covered with water, they will dry up and die.
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ed.fnal.gov/projects/frogs/froggiesfaq.html
ed.fnal.gov/projects/frogs/froggiesfaq.html
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