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Science project on frongs by Karina Abreu 72/B

Ponds are balanced ecosystems and for it to be completly balanced it need frogs. Frogs are important to a pond ecosystem because they probide food to animals like garter snakes, fish, raccoons, large diving beetles, snapping turtles, salamanders, and birds. This illustrates the important role that frogs play in the food chain of a pond community. Large frogs like the bullfrogs feed on a wide variety of foods including smaller frogs, snakes, birds, fish, and dragonflies. Also frog eggsare an important source of food for salamanders, birds and fish.

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Ontario has lots of different kinds of frogs. Some of the most common are the Green Frog, Bullfrog, Pickerel Frog, Leopard Frog and a small frog called the Spring Peeper. So as an enviromental scientist I have decided to use the bullfrog as the replacement for the pond ecosystem I have beed asigned to.

Bullfrog

General coloration ranges from green to olive to brown. The hind legs may be heavily marked with dark brown bars. Bullfrogs lack the two ridges of skin along the sides of the back found on the other rana species. Bullfrogs average form 3 1/2 to 6 inches in body length. This large frog lives in a variety of aquatic habitats: swamps, marshes, sloughs, lakes, ponds, rivers and creeks. Bullfrogs eat insects, crayfish, frogs, small fish and other small animals. Male bullfrogs produce their familiar "jug-o-rum" calls throughout the summer.

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So you see frogs are very important to a pond ecosystem, the food chain would be inbalaced without they and some animals which eat frogs will not have any to eat. So if you, the Canadian goverment, fund the relocation of frogs to rebalce the pond ecosystem, I will probide the pond with the frogs need to rebalance it. I have choose the bullfrog because I think it will be a successful species of frogs to take the place of the specie of frog lost through extintion. baleri li