Local boards or local boards of health were local authorities in urban areas of England and Wales from 1848 to 1894. They were formed in response to cholera epidemics and were given powers to control sewers, clean the streets, regulate environmental health risks including slaughterhouses and ensure the proper supply of water to their districts. Local boards were eventually merged with the corporations of municipal boroughs in 1873, or became urban districts in 1894.
Answer:
April 6 1917
Explanation:
The U.S officially entered conflict
Answer:
a machine used for imitation
Explanation:
To simulate is similar to imitate. In the passage, the machine allows the turtles to move their legs as if they were swimming. It copies the conditions turtles need to swim.
Simulators can be mechanical, as in the example, but there are also virtual simulators which are used in all kind of experiments, training, and leisure. Think of videogames or flight simulators.
