Answer:
Roman engineers used inverted siphons to move water across a valley if they judged it impractical to build a raised aqueduct. The Roman legions were largely responsible for building the aqueducts. Maintenance was often done by slaves. The Romans were among the first civilizations to harness the power of water.
Explanation:
It was tragedy and comedy to show life can be serious and it can be fun
Answer:
B. Microscope
This is because like a telescope is used by an astronomer, a biologist uses a microscope.
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http://www.answers.com/Q/Describe_the_skeletal_outline_of_passing_a_bill_to_law
