21. A group of frogs (called an army) is living in a tree. A frog turns green when in the shade and turns yellow when in the sun. Initially the ratio of green to yellow frogs was 3:1. Then 3 green frogs moved to the sunny side and 5 yellow frogs moved to the shady side....
INTERESTING FROG FACTSA group of frogs is called an C[pounds sterling]armyC[yen].Frogs don't drink water, they absorb it through their skin.Frog bones form a ring when the frog is hibernating, just like trees do (scientists can use these rings to determine the age of a frog)....
A group of frogs is called an “army.” These frogs exchange oxygen through their skin. Australian green tree frogs are thought to be able to control the amount of water that evaporates out from their skins. Though fertilization occurs externally, mating green tree frogs engage in coitus-like...
A group of frogs is called an “army. They hunt for food from dusk until sunrise. When the sun comes up, they find a place to hide in the trees under the leaves in the upper canopy. They sleep all day until it becomes dark again. They almost disappear when hiding in the trees. ...
There is an old story about an army of frogs that went jumping through the forest one day when two of them suddenly fell into a deep1. All of the other frogs gathered around to look2at their two fallen friends. They all began to3shake their heads and croak out warnings. “It...
19.There is an old story about an army of frogs that went jumping through the forest one day when two of them suddenly fell into a deep (36)A.All of the other frogs gathered around to look.(37)B at their two fallen friends.They all began to (38)C sha
There is an old story about an army of frogs that went jumping through the forest one day when two of them suddenly fell into a deep 1 . All of the other frogs gathered around to look 2 at their two fallen friends. They all began to
Margaret Bourke-White began her career as an industrial photographer in the early 1930s. In 1936, she accepted the American publisher Henry Luce’s invitation and went to his magazine, called Life, and later another magazine called Fortune. In the 1930s, Margaret Bourke-White met the American...
必修一Unit3 Sports and fitness预习学案新人教必修一Welcome Unit复习学案新高一:必修一Unit4 Natural Disasters预习学案1、adj&adv的级别●(adj&adv的级别)There is nogreater comfortfor an educatorthanto see the end result of his or her years of work.对...
3、What do we call the second month of the year?A, January B, February C, March D, April 4、What is the opposite of "full"?A, Empty B, Complete C, Packed D, Filled 5、What is the English translation of "室内植物"?A, Outdoor plants B, Indoor plants C, Garden plants D, Wild...