Answer:
How did Mandarin become the official language? All of the official spoken languages were once dialects. Mandarin was one of the 10 major dialects in China and it officially became the national language for China in 1911 after Dr. Sun Yat Sen overthrew the Qing Dynasty.
When Thomas Jefferson referred to the Missouri Compromise he described it as “ fire bell in the night”. This is because he saw it as a pressing matter and he saw this as an emergency since a fire bell at night indicates that there is an emergency.
Hope this helps! :3
Answer:
1) Beta waves
2) Alpha waves
3) Theta waves
4) Delta waves
Explanation:
1) Beta waves
The person is awake and alert. These waves have very low amplitude and a high frequency of 13 - 30 waves\second
2) Alpha waves
The person is awake and relaxed, with closed eyes. These waves have low amplitude and a frequency of 8 - 13 waves/second
3) Theta waves
The person is sleepy or in sleep transition.. These waves have low-medium amplitude and a frequency of 3 - 7 waves/second
4) Delta waves
The person is in deep sleep. These waves have high amplitude and a low frequency of about 3 waves/second
It tells you The road has two-way traffic, and you'd best stay right of the yellow line.
