The opera as a form of entertainment was largely limited to people with high incomes.
Opera originated in Italy at the end of the 16th century and it is a form of theatre in which music has a leading role and the parts are taken by singers. The audience wer weatlhy people from the high society.
The second sentence, "The science director's assistant placed the order yesterday afternoon," is written in active voice.
The correct answer is hypothalamus
Explanation: The hypothalamus acts on the regulation of temperature, appetite, thirst, sleep cycle and autonomic nervous system.
The body of water marked w the letter A is the indian ocean
