Answer: Aqueducts
Explanation: They were first developed around 312 B.C., these engineering marvels used gravity to transport water along with the stone, lead and concrete pipelines and into city centers. Aqueducts liberated Roman cities from reliance on nearby water supplies and proved priceless in promoting public health and sanitation.
Answer:
Creating local government
Yes, studying how mayfly population affects the number of trout in a stream is ecology.
Ecology seeks to unveil how different organism relate with one another as well as their environment.
Ecology is basically the study of distribution,abundance and relation of organisms and their interaction with their environment.
B. The reforms applied only to the federal government.
Answer:
The Board of supervisors has the executive power (governing the country, creating policies and overseeing departments - the last one is true at least in Los Angeles) but it also has legislative powers and even some judicial powers. land, law, education, health, maintenance, road, records, justice, elections, solution
Explanation:
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