enemies or observe the battlefield. As defenses were set into the first trench, more were dug behind it for more room to fall back if need be. These trenches were connected to each other by zigzagged communication trenches. There are many advantages and disadvantages to trench warfare. The trenches in which the soldiers fought in protected them from enemy fire from machine guns and rifles. There were also lines of barbed wire across the fields in front of the trenches to prevent enemies from advancing
Annotated Bibliography Aho, M., Vainikka, P., Taipale, R., & Yrjas, P. (2008). Effective new chemicals to prevent corrosion due to chlorine in power plant superheaters. Fuel, 87(6), 647-654. Power plants can get high-temperature rust by the condensation of alkali chlorides. A Lot of corrosion can be prevented if the gas goes through the duct before reaching the superheaters (convert wet steam to dry steam). The alkali can capture aluminium and ferric (iron) sulphates (salt) and both these mixture
When the soda began to be commercialized in the 18th century, it began to be sold as a cure for the variety of illnesses. Soda was initially sold in pharmacies and was mixed with some medicines to get a better flavor, but soda became a popular part of the American culture and nowadays soda is sold as a drink. But, is soda good for our digestive system? Are we hurting our digestive system with this drink? Why do people continue drinking soda if now is not used as a medicine? With this in mind, I