We review various ways that anurans have been of service to mankind, as well as threats to frog species from human activity beyond habitat destruction, global warming, and epidemic diseases. Over the centuries frogs have been a subject of fascination and entertainment, food, sources of medicinal ...
Though B. nana is far smaller than most animals, scientists say that there are frogs (青蛙) that are ; even smaller than B. nana. Can you imagine it?[记一记]blend into融合到(背景)中[练一练]回答问题。1. How many different kinds of reptile species are there in the world?___2. How...
The purpose of the last paragraph is to show that C . A. frogs are useful animals B. scientists are working very hard C. finding new species is important D. scientists can use animals to make medicines31. The writer says that researchers' jobs are getting more difficult because there are...
根据最后一段Researchers believe that frogs are important because they help keep the environment clean.We can also use them to create new medicines.Whenever we find a new species,we learn new things.For that reason,scientists work very hard to find new plants and animals every day.(研究人员...
But none of this can answer a fundamental question about dinosaurs' appearance: What color were they? In everything from movies to play sets, dinosaurs appear in shades of gray, brown and green. But it's just as likely that dinosaurs had the bright coloring of some frogs, snakes and birds...
Take them to the closest pond/swamp or a natral water source.(not the ocean) Many species of frogs are near extintion and I do not beilive that you should kill them. Chris D.on November 19, 2015: Rainy season again here in the Philippines. My backyard get filled again with water. ...
None of the 116 frogs were positive for chytrid, and no frog showed skin lesions or clinical signs of disease. Along with a lack of evidence for decline in the extent and quality of Trinidad stream frog habitat, we conclude that this species should no longer be regarded as under threat. ...
Many clever species are undeterred by porcupine quills, venomous snake fangs, sticky-armed octopuses, and more.
In 2019, a team of researchers led by a university professor (教授) named Austin discovered a new kind of animal. They were in Papua, studying the wide kinds of life of the island country. One day, the researchers were listening to the sounds of frogs (青蛙)at night. 2 At first, ...
How many vertebrae do frogs have? The vertebral column of frogs is made up of 10 vertebrae, the first of which is called the atlas (7), which articulates with the base of the skull. The atlas is the only cervical vertebra in the frog. Do reptiles have vertebrates? Reptiles are a clas...