.... because their invention in a lot of ways was the beginning of an explosion in the invention of synthetic polymers which continues to this day. Cellulose derivatives are forms of cellulose, a polymer found in wood, cotton, and paper, which have been chemically altered. Scientists first started to make them in the second half of the nineteenth century, long before we really even knew what a polymer was. The very first came about when a scientist reacted cellulose, in the form of cotton, with nitric acid. The result was cellulose nitrate. Cellulose nitrate, also called gun cotton, turned out to be a powerful explosive. It soon replaced common gunpowder as the explosive charge ....

.... cordgrass called hay, spike grass, and glasswort. Glasswort is the dominant plant of Pacific Coast salt marshes. Freshwater marshes provide nesting and wintering habitats for waterfowl and shorebirds, muskrats, frogs, and many aquatic insects. Salt marshes are wintering grounds for snow geese and ducks, a nesting habitat for herons and rails, and a source of nutrients for estuarine waters. Marshes are important in flood control, in sustaining high-water tables, and as settling basins to reduce pollution downstream. Despite their great environmental value, marshes are continually being destroyed by drainage and filling. Marine Life, plants and animals of the sea, fro ....

.... the electric current. When the charge in the capacitor decreases, at the same time the voltage decreases. As a result the rate at which the capacitor is discharged, which is the current, is decreased. The outcome of this is that the capacitor will be completely discharged meaning that both the current and voltage will equal zero. At this time all the energy stored in the circuit will have been transferred to thermal energy at the resistor. A heater uses electrical power. The power dissipated in a resistor is in return proportional to the resistance and the square of the current that passes through it. As the energy is changed from electrical to thermal the resistor gets hot ....

.... After completing her high school education in 1883 at the age of sixteen, Marie began earning her living as a tutor and governess for a family in Poland. This was a time when Russia dominated Poland and girls could not attend universities in Poland. Marie’s older sister, Bronya, had already left Poland to study medicine at a university in Paris. Marie sent a portion of her earnings as tutor and governess to Paris to help pay for her older sister’s medical studies. In 1891, when Marie was twenty- four years old, she was invited to live with Bronya upon her completion of medical school. This enabled Marie to enroll at the University of Paris and begin her own dream o ....

.... is wrong, providing selective interpretations of the fossil record. But their interpretations are exaggerated and foolish. Creationists will pick one scientific theory and do everything they can to point out it's flaws, disregarding what they can't prove wrong. They will often use emotions to control the public to their side. They spend their time trying to discover false evolution rather than teaching their beliefs to the general public. The theory of evolution removes humans from the center of the universe, and religious followers can't believe that their God, who created us in his image (Bible, 2), would allow that. The creationist arguments can be summed up in one ....

.... This sport, called Falconry, is still popular. However, in the 1960s the American falcon came close to extinction. Most of the damage was done by poisons that farmers used to kill insects. The worst poison was DDT. By the time naturalists learned of DDT's effect on wildlife, it was almost too late. The American peregrine's scientific name is Falco peregrinus anatum. At one time, people called this falcon a duck hawk. That was a poor name, since falcons aren't hawks and they rarely kill ducks. The American peregrine was once found all across the eastern United States and southern Canada. In the west, the species was found from Mexico to California. DDT poi ....

.... any nickel or other contaminants into the bodies of the allergic or hypersensitive. Secondly, gold is extremely malleable and can be worked into amazingly fine detail. This is highly desirable for some types of fine filigree work and also means that a ring made out of 24 K gold can be easily opened and closed without special tools and without growing brittle and/or breaking as is the case with most harder alloys. The disadvantages are clear. The price is high and in its pure form it's so soft it wears quickly from the purely mechanic rubbing of your skin and of other jewellery. The common solution, however, is not without its flaws. "Cutting" the gold with cheaper metals c ....

.... The Indian Hemp plant is found all over the world, including the US. There are three different types of Indian Hemp. They are Cannabis Sativa, Cannabis Indica, and Cannabis Rudderalis. These three plants vary in size and mood altering effect. The hemp plant has many uses and has been farmed for centuries. Marijuana can be taken in three ways, by eating, made into a tea, or smoking (the most popular). Smoking it can be done three ways, through a pipe, a joint, blunt. A joint is a rolled piece of paper that is twisted at the ends. A blunt is normally an emptied cigar wrapper filled with marijuana. In a blunt you can fit much more marijuana. Though a blu ....