Dolphins are mammals closely related to whales and porpoises. Dolphins have a powerful and streamlined body. They are found in all seas and oceans. Dolphins can be told apart from porpoises by their nose, which is beaklike, and also their conical teeth. Porpoises have a flatter nose, sharper teeth, and a more solid body. There…
Comets are small, fragile, and irregularly shaped. Most are composed of frozen gas. However, some are composed of frozen gas and non-volatile grains. They usually follow very strict paths around the sun. Comets become most visible when they cross the sun. This also applies to people who view comets with telescopes. When a comet gets…
Neptune is the outermost planet of the gas giants. It has an equatorial diameter of 49,500 kilometers (30,760 miles) and is the eighth planet from the sun. If Neptune were hollow, it could contain nearly 60 Earth’s. Neptune orbits the Sun every 165 years. It has eight moons, six of which were found by Voyager…
Mercury is the closest planet to the sun. Its average distance from the sun is approximately fifty-eight million km and it’s diameter is 4875 km, making it the second smallest planet in our solar system. Its volume and mass are about 1/18 that of the earth and its average density is approximately equal to that…
What does NAFTA mean? A Free Trade Area is, by definition, an area where all barriers to trade are lifted. This is not the case with regards to NAFTA at this point. Currently most of the trade barriers between the United States and Canada are lifted but those with Mexico have largely been kept in…
From Earth, one can look towards the night sky and observe that the moon appears to have areas that are lighter, and areas that are considerably darker. These dark areas are referred to as lunar maria, which are basically land basins on the moon in varying sizes. These basins were formed when hot, molten lava…