Are sharks nekton? Do catfish have teeth? Are sharks ectothermic? Do stingrays have scales? Are sharks bony fish? Do whale sharks live at the bottom of the sea? Do great white sharks eat tiger sharks? Do hippos have canine teeth?
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 ...
探阅读理解What do sharks, turtles, chickens, and crocodiles have in common? They all lay eggs, and they are all living relatives of dinosaurs.Dinosaurs first appeared about 245million years ago. Sadly, all the dinosaurs except the flying ones died out around 66million years ago. So, our kno...
Yes, stingrays have scales. Stingrays (as well as sharks) have a different type of skin than most fish. While they have scales, the scales are a...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
Are shark teeth bone or cartilage? Shark teeth are composed of dentin and enamel, both of which are hard tissues but not considered to be bone. These materials help protect theshark’s teethfrom damage and wear and tear during feeding. As a result, sharks are able to maintain sharp sets ...
Didprehistoric sharksalso have cartilaginous skeletons, or did they actually have bones? The key to discovering the answer is to look at the fossil record. The earliest fossil record of sharks is a few scales that date back to 450 million years ago. Then there’s some shark teeth from 410...
Animals can do amazing things and have amazing habits. Sharks are very amazing.Many sharks live in the ocean, but some live in the rivers or lakes. There are as many as 300 types of sharks in the world. Most sharks in the ocean can't stop moving. If they do, they can't breathe ...
What do sharks, turtles, chickens, and crocodiles have in common? Of course, they're all animals. If you know more, you might say they all lay eggs. However, do you know that they are all 1 relatives o dinosaurs(恐龙)? Dinosaurs first appeared about 245 million years ago. They 2 the...
What kind of scales do bony fish have? What do great white sharks eat? How many bones does a shark have? What is a baby hammerhead shark called? What kind of shark is Chum in Finding Nemo? What oceans do great white sharks live in?
Sharks have 8 unique senses. They are hearing, smell, lateral line, pit organs, vision, Lorenzini, touch, and taste. The shark shares many sense that humans do such as taste and smell, but it has three senses that we do not have. The lateral line, pit organs and Lorenzini are senses...