While most turtles sport a hard, protective shell on their backs,leatherback sea turtleshave their bony protection embedded under their skin and oily flesh. Hence the name… Most turtleshellsare made of scutes, or hard, bony plates outside the turtle's skin, but the leatherback has mini-plate...
Why do turtles have 13 scutes on their shells? Look at the top surface of the tortoise shell, also known as its carapace. You’ll notice what’s called scutes. These are bony plates made from keratin.You should remember those numbers.Remember how the moon has 13 phases in a calendar yea...
[2] At sea,turtles have always faced natural predators,such as large sharks,but they now face an increasing number of threats from man.The reptiles are hunted for their skin,meat and distinctive shells.Additionally,they can become entangled in fishing gear or struck by shi...
Speaking of things that make me immediately suspicious, Instagram and YouTube have been flooding my feeds lately with videos of butterflies attacking turtles. Yes, you read that right. Beautiful butterflies swarming poor turtles just trying to bask in the sun. And yes, this says a lot about my...
Why do turtles have shells? From studying turtle embryos, scientists know that a turtle's shell originates from its ribs and vertebrae. This form originated over 250 million years ago, when the ancient ancestors of modern turtles that lived on land had evolved half a shell, expanding from the...
2020-04 4 Sea turtles have hard shells 160 2020-04 5 Sharks have sharp teeth 151 2020-04 6 Dolphins can jump 145 2020-04 7 夜色 239 2020-04 8 Whales can blow water 108 2020-04 9 Seahorses look like horses 144 2020-04 10
第二节 (共10 小题;)阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。Do you know that sea turtles have been l
Why do turtles have shells? From studying turtle embryos, scientists know that a turtle's shell originates from its ribs and vertebrae. This form originated over 250 million years ago, when the ancient ancestors of modern turtles that lived on land had evolved half a shell, expanding from the...
Male sea turtles never come back to its birth place on sand from where it was hatched. In order to give predators the slip, females usually burrow vacant shells in various places on sand. As soon as a musk turtle sniff danger, he emanates a disgusting odor. ...
Turtles do not have hair or fur, they also do not have feathers. ... See algae on the shell between their jaws expected among freshwater turtles a hair...