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Sacramento, California, USA - April 16, 2012: A 2005 USA postage stamp with an image of  Kermit the Frog, one of the Muppets from the TV series 'The Muppet Show'. Kermit is one of the oldest and best-known Muppet characters, and is commonly identified with the song (and saying) It's Not Easy Being Green.
Process of concrete wall on the side of a mountain to prevent a soil and rock landslide onto the highway
Asian girl playing with a little frog.
Large piles of what looks to be salt at an industrial factory in California.
Sitting on a boulder in a lake is a huge bullfrog.
Frozen - Plastic toy croaking frog covered with ice on red icy cement next to metal luminaria
A carnivorous frog native to the tropical swamps, scrublands, and savannas of Central and South Africa. It is also known as the pixie frog, giant bullfrog, or South African burrowing frog.
Habitat Pollution Concept and environmental damage or climate change urgency idea as a green frog infected with pollution and toxic chemicals with 3D elements on a white background.
African Pyxie bullfrog green and big
Oatman Arizona Mining
American Green Tree Frog
Wheal Maid Valley, Cornwall, UK
The white-lipped tree frog (Nyctimystes infrafrenatus) resting on a rock. Photographed at Cow Bay, Far North Queensland, Australia
Old salt mines and wells in Mankang County alongside lancangjiang(Mekong) river, Yunnan province, China,  which has 1300 years history.
Extraction of alluvial and processing of sand in a sand pit
frogs survive in the fresh water lagoons of eastern Texas
Dried and Run Over frog on the ground.
Close-up of American bullfrog (Lithobates catesbeianus) -- the largest frog species in North America -- on wall of a garden pond in late summer/early fall, Connecticut
Sea salt production.  machinery for the treatment of the salt, Salt production equipment, The equipment and salt stock of a salt plant
Aerial view of the Fosterville Gold Mine in Central Victoria
Indian frog is floating on water in a pond in night
Giant MIne sits abandoned on the edge of the arctic city of Yellowknife, Northwest Territories.   Industrial setting, old buildings and blue sky for copy space.
Bullfrog in a pond in Arizona
Hyalinobatrachium ruedai from Central America
java tree frog isolated on black
A large Green Frog (Lithobates clamitans) floats on the surface of a pond.
Detail of little Pyrenees frog in Astun ski station, Huesca spain
Japanese tree frogs, found in rice fields and grassy areas, have the amazing skill of being able to change the color of their bodies. They often change the color of their bodies to match their surroundings, for example being green when they are resting on grass. They have round suction cups on all of their fingertips, which makes them good at climbing trees. They also have the special skill of being able to stick to window glass.\nThey can change the color of their backs to match their surroundings and background.
A lemon tree from the Atlantic Forest, posing for a click on my hands.
Front view of male green frog (Lithobates clamitans or Rana clamitans) on lichen-covered rock in Connecticut, late summer/early autumn. In the male of this species, the tympanum or ear is larger than the eye and the throat is yellow. The green frog has a ridge going down the back that distinguishes it from the bullfrog.
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