Explanation:
it's true it's the first Islamic Empire
The answer in the first sentence above is hypothesis because it is defined as having to state a prediction or conjecture in regards about an experiment whereas the second sentence' answer is experimental question because researchers tend to state what they plan to do in regards of their investigation and they do not apply any predictions in the experiment.
B. air pollution from trucks and C. unclean water from fertilizers.
Answer:
Federalist No. 51 addresses means by which appropriate checks and balances can be created in government and also advocates a separation of powers within the national government. The idea of checks and balances is a crucial part of the modern U.S. system of government.