Wednesday, January 23, 2013

Contoh Artikel Bahsa Inggris Tentang Pendidikan


ANIMAL MIGRATION

Animal migration is a periodic movement of animals from the place where he had lived to a new area and then travel back to their natural habitat. animals migrate factor is usually to look for the food was plentiful and a good place to breed. seasonal animal migration is the most amazing phenomena of the natural elements.
Migrating animals generally use the same route from year to year - from generation to generation. Land animals can be cross mountains, rivers, and vast prairie . Birds, bats and insects fly in range long distances, sometimes over the entire continent or ocean. animals that swim often migrate almost by covering a distance of half of the entire world.
Movement of animals moved normally associated with seasonal changes. Many animals migrate to the north during the months of the summer. because of the long summer days in the northern part of the world to ensure the provision of a good food supply. As in the approach to the weather forecast the fall and winter, many animals migrate south to find warmer weather in the winter and the availability of food.
Some animals migrate every year with trips back and forth are made in one year. There are even some animals have 'migration patterns that can be linked to weather patterns' their movement is dependent on rainfall and the availability of green plants. there is a migration of animals that can last for several years just to move the migration cycle completion.
Many scientists look at animal migration as an adaptation. Animals that have learned to switch to an optimal environment are animals that survived to continue the species.
After spending 17 years in the soil, insects loud, cicadas will migrate towards the outside world to come together, sang, and mating. Their performance in sync, effectively distancing cicadas from predators during the five weeks of his adult life. Migration distance cicadas diverse, ranging from a few inches to thousands of kilometers.

1. Lemming Rodents
 like hamsters and mice will migrate at high speed from his native habitat, the North Pole. Some scientists say the cause of this massive migration occurs because the lemming population exploded without being accompanied by an ample food supply. Lemmings can move as far as 16 kilometers in one day.

2. Wildebeests
These herbivorous animals will do anything to find greener pastures. Serengeti wildebeest and zebra and his reindeer are able roam hundreds of miles in a group to avoid the dry season in Tanzania and Kenya.

3. Green Turtles
 maternal instincts of a green turtle forced him back to the place of birth to start a life with his family. Green turtles who are pregnant can swim thousands of kilometers from breeding grounds in Brazil to the South Atlantic Ocean to the island of Ascension.

4. Salmon
After spending many years in the ocean, salmon will return to his birthplace in the freshwater rivers to breed and die. To achieve this end, they are willing to swim against strong currents hundreds of miles, even if it means arriving in a deplorable state.

5. Rubi Necked Hummingbird
Before flying as far as 804 kilometers to the United Center, ruby-necked hummingbird bird will perch on flowers, insects, and tree sap sucking. Birds that have a flutter superfast will consume two grams of fat, nearly twice his body weight to travel nonstop from North America across the Gulf of Mexico.

6. Monarch Butterflies
Migration distance is the hallmark of the Monarch butterfly. Each spring, thousands of broad-winged butterflies flew west to California and Mexico. While in summer, monarch butterflies expedition as far as 4828 kilometers through the U.S. and Canada. Until now, the cohesiveness of the Monarch butterflies migrate remains a mystery to the scientists.

7. Whooping Stork
Long-legged birds that one is threatened with extinction. Scientists have done a variety of ways to save this species, including teaching flying lessons. Using ultralight engines like remote-controlled cranes, whooping cranes led south to the area of ​​protection.

8. Freshwater Eels
Eels are one is ready to face the rigors since the birth of life on the water. After hatching in the Sargasso Sea, this eel swim to some sweet-water rivers in England and on the east coast of North America. On the way, their kidneys will adapt to the level of water salinity. When it is time to lay eggs, kidneys freshwater eels will return to its original state.

9. Humpback whales Squad
Humpback Whale or humpback whales maintain a record of the animals that roam the furthest distance in the world. Several whales weighs 36,000 pounds to spend his time eating tons of food in the arctic peninsula. In winter, they will swim as far as 8046 kilometers to the breeding grounds in Colombia and in the region near the equator.


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