Frogs are called amphibians because they can stay both in water and on land. 根据上面的短文,选择合适的选项。 ( )1. How many animals are mentioned in this passage? A. Four B. Six C. Seven D. Eight ( )2. Which animals are important in keeping the balance of nature? A....
Why are frogs considered ecologically friendly? Why is it harder to clone animals than amphibians? How does global warming affect amphibians? Why did the temnospondyls survive the Permian extinction? Why didn't dinosaurs evolve? Why is biodiversity declining?
Why are animals like frogs called amphibians? Why is an amphibian's heart not suited for a mammal? Why do amphibians need to live in moist environments? Why are bony fish and aquatic amphibians ammonotelic in nature? Why are reptile hearts better than those of amphibians and fish? Why do ...
UnlikeLeptopelis aubryi, these frogs are predominantly freshwater species. They prefer water bodies that are still and motionless. Therefore, they are often found in calm creeks and marshes. These amphibiansbreathe underwatervia a process called cutaneous respiration. It is a process where the frog ...
根据Many of her videos are fun to watch and a lot of people love them.(她的很多视频都很有趣,很多人都喜欢。)可知很多人都喜欢看库克的视频。故选D。(3)细节理解题。根据 Cooke is especially interested in frogs and other amphibians (两栖动物).(库克对青蛙和其他两栖动...
听力原文: I want to talk today about some studies. They seem to indicate that there is a startling world-wide decline in the number of amphibians, such as frogs, toads and salamanders. There's little doubt that one reason why the number of amphibians is
When light hits these cells, they produce a silvery iridescent reflection in frogs, as well as other amphibians, fish and invertebrates. In most green frogs, sunlight penetrates through the skin to the little mirrors in the iridophores. The light that reflects back is blue. The blue light ...
While they do look a lot like fish, axolotls are actually far from it! They are, in fact, amphibians, along with frogs, salamanders,newts,olms, andcaecilians. However, while most salamanders and other amphibians trade their gills for lungs upon reaching adulthood, axolotls never lose the feath...
Back at Daintree we saw this White-Lipped Tree Frog,Litoria infrafrenata. This is the largest tree frog in the world. There are other larger frogs but these are unable to climb: Back at Mossman, we photographed a Giant Orb Weaving spider,Nephila pilipes. This individual had a span across...
the evolutionary origins of claws, talons, and our own nails a bit fuzzy too. Most of the early evidence for claws comes from track marks left behind by our four-legged ancestors or from a clawed frog, the African bush frog that has claws, which is unusual for frogs and amphibians. ...