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.
Answer:
During many decades of the 19th century Industrial Revolution, workers conditions were terrible and often inhuman. They were exploited by factory owners. They worked too long, often for 15-20 hours per day; received miserable salaries; worked and lived in unsanitary conditions; they and their families were malnourished and in poor health. This situation affected women, as well as men and children. In the case of women, they had an additional problem which was the fact that they did not have enought time to take cafe of their children, as they had to spend so many hours outside home working in factories.
Explanation:
