1. Roman and New York Aqueducts
... quarried in separate places from the other stones. The Romans invented fairly simple yet effective machines to assist in the construction. The first machine was called the goat. It was used to lift heavy loads either off a ship or up the arcade. Slaves provided the power ... city's water supply. Although it receives high quality water the system has a large water quality problem. The problems include sewage, waterfowl contamination, urban runoff, and Westchester airport storm water runoff. Various environmental committees in the city are working on a plan to prevent pollutants from ent...
- Word Count: 5087
- Approx Pages: 20
- Grade Level: High School