Mendiskripsikan

Deskripsi Hewan

SHARKS

A shark is a fish that lives in the sea. Sharks have live d on Earth for almost 400 million years. Today, there are about 375 species (kinds) of sharks. The smallest is the dwarf dogfish, less than 8 inches (20 centimeters) long. The huge whale shark can be more than 50 feet (15 meters) long.

Sharks, like all fish, are vertebrates (animals with a backbone). A shark’s skeleton, however, is not made of bone. It is made of bendable material called cartilage.

Sharks, like other fish, are cold-blooded. They do not make their own body heat.

Sharks live in seas all over the world. Most sharks live in warmer waters. However, sharks have been spotted near the North and South poles.

Sharks live in salt water, but some can live for a while in fresh water. Bull sharks, for example, can swim up the Mississippi River.

Some kinds of sharks live in shallow water along coastlines. Other sharks live far out in the open ocean. A few species live deep down in the sea.

Sharks have long, streamlined bodies that taper in front and back. This shape lets sharks glide gracefully through the water. It also helps them put on great bursts of speed. Most shark species have bodies that are from 3 feet (1meter) to 6 feet (2 meters) long. The best-known sharks, however, are the biggest sharks. Hammerheads, tropical sharks with T-shaped heads, can be 12 feet(3.5 meters) long. Great white sharks are often more than 20 feet (6 meters) long.

A shark’s body may look smooth, but it is actually covered with tiny, rough scales. These scales feel like sandpaper to the touch.

Sharks have several fins that help them swim. Their dorsal fins keep them steady in the water. Fins behind the head help them turn and move up and down. Fins near the tail help keep them level. The big tail fin, however, is what really makes a shark go fast.

If a shark stops swimming it will fall to the sea bottom. Unlike other fish, a shark does not have a swim bladder. An air-filled swim bladder helps fish float. 

Most sharks have to keep swimming in order to breathe. Like all fish, a sharks breathes through its gills. Gills take oxygen out of the water. All animals need oxygen in order to live.

Unlike other fish, a sharks does not have the muscles to pump water through it gills. Sharks have to move in order for water to enter the gill slits on the sides of their heads.

Most sharks have powerful jwas and rows of sharp, triangular teeth. They use teeth and jaws to crush their prey or tear out pieces of flesh.

Your teeth are anchored in your jaw. A shark’s teeth are set into its gums. Sharks often lose teeth while eating. However, there are always rows of new teeth growing behind the first set. As a sharks loses teeth, new ones move forward to replace them.

A sharks sense of smell is so powerful that it can detect order in the water hundreds of meters away. Sharks eyes detect very small movement and can see in dark water.

Sharks, live other fish, have a special sense called the lateral line, which runs around the side of the body and into the head. It can sense the tiniest vibrations in the water caused by sounds or animal movements. Sharks can also sense weak electrical currents from nerves and muscles in living animals.

Females in some shark species lay eggs outside their bodies. Others keep the eggs in their bodies until they hatch. Still others give birth to live young much the way mammals do.

Sharks have between and 1 and 2 babies, or pups, at a time.

Fish is the favorite food of most meat-eating sharks, along with shellfish. Great white sharks will sometimes eat larger prey, such as seals, dolphins, shakes, and other marine mammals.

Sharks play an important role in keeping ecosystem in balance. Sharks often eat weak or diseased animals. Biologists fear that without sharks, the number of other animals in the sea would quickly grow out of control and eat all the food. It might take many years to restore delicate balance that sharks help maintain.

Ø Perkenalan Disekolah
In The School
Bahar : Hello, good morning, my name is Bahar. I am a new Student in your classroom.
Salsa : How do you Bahar. I am Salsa
Bahar : How do you do Salsa. Nice to meet you

This is my first day to join this class
Salsa : I hope you enjoy studying in this school.
By the way, let me introduce you to my sister
Syifa… Syifa, this is Bahar my new classmate
Bahar : Hello Syifa, Nice to meet you
Syifa : Nice to meet you too, Bahar
Bahar : Thank you very much, Salsa
I am very grateful to you for introducing me and become my friend.
Salsa : You are welcome
Bahar : Where do you live Salsa?
Salsa : I am live on Adi Sumarmo streets
Bahar : Can I play your place?
Salsa : Let's go to my house (with riding a motorcycle)
Syifa : Be careful, Bahar
Salsa : Please, don’t drive too fast
Bahar : All right
Syifa : Wow fantastic, your house is very beautiful
Salsa : Hhmm.. let's get into my house
Bahar : Do you mind if I sit here?
Salsa : No, please sit down
Syifa : Where are your parents?
Salsa : I am an orphan, my parents had died
Syifa : I’m sotrry to hear that, I do not mean to make you sad
Bahar : then you stay at home with whom?
Salsa : With my sister and my brother
I can provide a drink?
Syifa : do not have a hassle later
Salsa : Nothing
Syifa :Drinking iced tea
(Salsa made ​​iced tea for Syifa and Bahar).
Bahar : I apologize for accidentally spilling a drink this
Salsa : Don’t worry about it.
Syifa : Salsa, it’s time to go home now
Good bye, see you tomorrow
Salsa : Bye… see you