Voice of Dinosaurs

No one really knows if dinosaurs had voices. Maybe some did and others didn't. Hadrosaurs had a hollow in their head crest, and they may have trumpeted sounds through it almost the way an elephant uses its trunk. Sound leaves no visible record and so the question of whether dinosaurs could communicate may be the most difficult question of all. However, there is fossil evidence to show that the nostrils of Hadrosaurs were elongated. The hollow in the head crest might have acted as a kind of echo chamber; a noise formed in the throat trumpeted through the crest for identification of species, communication, mating and warnings. Parasaurolophus, or the archetypal Hadrosaaurus, was named the trombone duckbill because of its facial structure.

Aliens different form us…?

If they look so "biologically different from us"- assuming that we know what every species of creature on this planet looks like, and has metabolisms and behavioral patterns that we recognize - we should see them as nothing but aliens. Then, again - and to repeat a popular science fiction trope - they might just be walking, eating, farting and sleeping amongst us (not fornicating and reproducing with us, successfully, at least, because it is entirely unlikely that even though they might look like us, their DNA will be a replica of ours. But who knows? If they look like species among us, they've probably got to gene splicing, perhaps gene replication, perhaps even gene creation - in which case, they are us. Perhaps the alien is a virus in my laptop that's found a way to jump the binary-gene barrier and has leaked into me through my fingertips and is forcing me to write this crud. Man, this is a complicated business. I'd better degauss my laptop. Better to lose all my software than to turn into an alien virus hatchery.

Sahara Desert Information

The Sahara is the biggest desert in the world. It covers nearly a fourth of the whole African continent. It extends into 12 countries and stretches 3,500 miles (5,600 km) from east to west and 1,063 miles (1,700 km) north to south. Sahara is from the Arabic word meaning desert. This desert stretches from the Red Sea to the Atlantic Ocean, and it is larger than the Mediterranean Sea. Its very low rainfall does not encourage the growth of plants, although there are a few. Some animals also live in the desert, although they are primarily small nocturnal ones, and number of reptiles. The fruit of the date palm, which can ordinarily be found in and around oases, provides a little food for the people who make the desert their home.

Foolishness to send signals to universe

Chromosomes and genes are the basic constituents of living body. We know that genes are basically amino acids. They have self dividing capability. These are the primitive forms of life. For their existence, some factors are essential. These factors are water, air and light. Temperature is also an essential factor. The first life originated from these factors. In the primitive earth, there existed all the favorable factors essential for the origin of life. But high temperature made the life impossible. (New indentations make some contradictions to my concept)Gradually, the earth cooled down and the temperature decreased. It believes that, these phenomena first took place in Pluto, which lies far away from the sun. So, the first planet (?) which showed the favorable conditions for the life may be Pluto. As time passed, the temperature fell down. Then the possibility of existing life was in Neptune, the next planet.

Foolishness to send signals to universe

Chromosomes and genes are the basic constituents of living body. We know that genes are basically amino acids. They have self dividing capability. These are the primitive forms of life. For their existence, some factors are essential. These factors are water, air and light. Temperature is also an essential factor. The first life originated from these factors. In the primitive earth, there existed all the favorable factors essential for the origin of life. But high temperature made the life impossible. (New indentations make some contradictions to my concept)Gradually, the earth cooled down and the temperature decreased. It believes that, these phenomena first took place in Pluto, which lies far away from the sun. So, the first planet (?) which showed the favorable conditions for the life may be Pluto. As time passed, the temperature fell down. Then the possibility of existing life was in Neptune, the next planet.

Know About Submarine

A submarine has tanks inside. These are filled with water to make the sub sink. To make the sub rise, the tanks are emptied, making the sub lighter.Submarines have been used since the 18th century, but the first practical submarine was not Built until just prior to World war I. Today most submarines are in military service, but future plans call for the use of submarine oil tankers. Submarines submerge and surface by filling or emptying their sea water tanks, but they also control their depth with a horizontal rudder.