Let's have a look!① A polar beats(北极熊) hair is not white it has no colour. The skin(皮肤) inside is black. It can save the warmth from the sun and keep the bear as warm as possible. A giraffe②has seven bones in its neck A man also has seven bones in the neck. But ...
What do sharks(鲨鱼), turtles(乌龟)and chickens have in common? Of course, they’re all animals. If you know more, you might say they all lay eggs. However, do you know they’re all living relatives of dinosaurs(恐龙)? Then how did dinosaurs disappear(消失)on the earth? Dinosaurs ...
Going to the Firehouse 《去消防队 All About Kites 《关于风筝 You're IT! 《该你来找了! Go Away Mr. Wolf 《狼先生,快走开! Ocean Animals 《海洋动物 Monster Cowboy 《牛仔小怪物 119-Whose Tracks are These 《这些脚印是谁的? E...
Did ancient sharks have bones? No. Fossil evidence suggests that all ancient sharks lacked a true bone-based skeletal system, relying instead on primitive cartilage structures to provide their bodies with support and flexibility. This means thatsharks have been without bones for millions of years!
the inherited instinct to bury food prevails. It is not unusual for dogs to grab a bit of kibble and hide it in a corner or under a sofa cushion. While this may be an annoyance for the pet owner, this behavior is normal for dogs. They may not have real bones and they may not dig...
These included their bones, teeth and more. Scientists have found them on all six continents(大陆).The age of dinosaurs finally came to an end. Scientists wanted to know what caused it, so they looked into it. They studied and tested all the traces(遗迹) dinosaurs left on the Earth. ...
Sadly, all the dinosaurs except the flying ones died out around 65 million years ago. So, our knowledge of them comes from under the ground. Scientists studied what they left behind after they died. These included their bones, teeth and more. Scientists have found them in all six continents...
Penguins find food in the ocean. They like to eat fish, shrimp and squid. Penguins do not have teeth. They are birds. They swallow their food whole. Penguins move in their own special way. On land, they walk slowly....
Sharks do not have bones. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissues—the clear gristly
Most animals have a backbone that is made of bones joined together to form a skeleton. is called a vertebra. These are the building blacks that form the backbone, also known as the spinal cord. What animal has no backbones? Sponges, corals, worms, insects, spiders and crabs are all sub...