I've seen females listen to lot of Pop and Hip Hop, but do they listen to Metal?
There was little core structure, the strength was in the outer walls and when the fires from the planes fuel load weakened the structure the floors fell out and the overload on each floor as the one above collapsed onto it caused the chain reation. I believe in conspiracy theories and I believe a bunch of muslims conspired to knock the twin towers down using aeroplanes and their brothers celebrated with great gusto in Palestine and elsewhere when the towers came down.
That's a tall order. It includes all elements and all possible compounds that can be made with those elements. There is also the matter of concentrations and location for each of these items. Oxygen, for example, is essential for animal life, yet a deadly wast product for plant life. Too high a concentration of oxygen will also kill animals. How does one put all of biochemistry into a nutshell?
Well, it's indeed going to be a big answer. Metal ions, though present in such a low concentrations as nanograms in living systems, have a very high impact. Let's take, for example, oxygen transport. It's the first and foremost thing for any living organism. Hemoglobin, which contains IRON, carries out this process in humans . There are many enzymes in physiological systems - almost every enzyme has an active site where the metal ion is present. Without this metal ion, the particular action is impossible. A minute increase in metal ion concentration in human body may lead to death. Cadmium, for example, which is present in one of the enzymes, is poisonous when its concentration exceeds the limit. In plants, you have chlorophyll, which again contains a metal ion. This is how metals are important. Carbon, which is a non-metal, is the building block of any living organism. Carbohydrates, amino acids, proteins, lipids, etc. contain carbon. Similar is the case with nitrogen and hydrogen. The role of oxygen and carbon dioxide is known very well. Chlorine is present in the gastric juice as hydrochloric acid. This list will be endless if I go on talking about each and every element. What you need to understand is: Without metals or non-metals, life is not feasible.
