Crust

Zn, Cd and Hg. All these elements belong to group 12 of periodic table. Zinc has an atomic number 30, an atomic mass of 65 and one main oxidation state (+2). Zinc has five nature isotopes . Zinc is the 24th most abundant element in the earth’s crust. Its properties is very similar to Cd.Zinc is very useful in biological systems. Zinc also is involved in many biochemical processes that support life and required for a host of physiological. it is an one of the most essential plant micronutrient…

trench is 69km (43miles) wide. The length is five times greater than the length of the Grand Canyon. According to the www.livescience.com website The Mariana Trench was created by a process that occurs in a subduction zone where two parts of oceanic crust collide (subduction is a process when one tectonic plate collides with another and submerges under it slowly sinking…

WARNING! There has been word that the Yellowstone supervolcano is about to blow. A supervolcano is like a regular volcano but the eruption is thousands of time greater than a regular explosion. The last time this volcano erupted was about 174,000 years ago. Yellowstone is still active and another eruption is possible but very unlikely. If it does happen to erupt it could end civilization. There is huge volcano under Yellowstone National Park, which is being watched 24/7. If or when this…

The poems “Harlem” and “I, Too, Sing America” though both by Langston Hughes, are different in their tones and themes; they share common structures and line construction, keeping Hughes’ style consistent. In both poems, the lines are not structured in anyway, instead they are separated sporadically, bringing attention to certain lines. “Harlem” is written entirely in free verse with an occasional rhyme. However, “I, Too, Sing America” does not rhyme at all. Both poems are written in short…

In four-hundred and sixty million years ago in the Ordovician era the plates are moving again and a new continent is formed called godiwalla. There should be plants and animals now because of the oxygen level, but there is only one reason why there isn’t any life on land yet, the sun. The sun is blasting the earth with deadly radiation, life on earth would not survive at all. With thirty miles from the earth 's surface the oxygen meets the sun 's radiation it forms another gas called the ozone.…

or opening, in the Earth’s surface through which molten rock, gases, and ash erupt. The word also refers to the form or structure, usually conical, produced by accumulations of erupted material. Volcanoes are formed near weak spots on the Earth’s crust and where magma has been stored below. Magma is created when tectonic plates come together at a subduction boundary, one plate…

Damages were not nearly as serious as it would be today, mostly because Southern California was sparsely populated. The effects of the earthquake were quite dramatic, even frightening. Were the Fort Tejon shock to happen today, the damage would easily run into billions of dollars, and the loss of life would be substantial. On March 10, 1933, a 6.4 earthquake hit the Newport-Inglewood Fault, causing serious damage in long Beach and other communities. The earthquake resulted in 120 deaths and more…

area known as the Colorado Plateau rose spectacularly because of the convergence of the Pacific plate and the North American plate. Millions of years ago, the plates collided and the oceanic crust subducted. The Pacific plate was pushed under the continental crust, and the upward push of the continental crust led to the formation of the Rocky Mountains, which were once even higher than the Himalayas. The conflict between these plates were buckling, which caused the formation of mountain ranges…

Last spring my organic seed supplier had a special on pie pumpkin seeds. Naturally, I decided to grow pie pumpkins for the first year ever. The five vines I planted produced over 100 pounds of pie pumpkins. This left me with a problem: I can only eat so many pumpkin pies. I can only give my neighbors and friends so many pumpkin pies. I did find the pumpkins work well in pumpkin soup (something I've eaten a lot of lately) but I still needed something different. I recently found it: pumpkin…

understand the importance of calcium in the body and how you can make sure you are getting the right amount. Calcium is the chemical element of atomic number 20 and a soft gray metal. Although calcium is the fifth most abundant element in the earths crust it is never found free in nature since it easily forms compounds by reacting with oxygen and water. Metallic calcium was first isolated…