Answer: the introduction of new crops from the Americas
Explanation:
The rapid population increase in China in the seventeenth and eighteenth centuries was due to the introduction of new crops from the Americas.
Food crops like maize, tomatoes, sweet potatoes, beans etc were brought into China which led to major developments accompanied with migration and population growth.
Answer:
2.3 repeating
Explanation:
Convert root 5 to a decimal: 2.2
Convert root 6 to a decimal: 2.4
π = 3.14
Therefore, pi wouldn't work.
5/2 = 2.5
Therefore, 5/2 wouldn't work.
2.1 wouldn't work.
2.3 repeating is the only one between 2.2 (root 5) and 2.4 (root 6), so 2.3 repeating would be your answer.
Have a lovely rest of your day! :)
Answer:
Essentially, psychology helps people in large part because it can explain why people act the way they do. With this kind of professional insight, a psychologist can help people improve their decision making, stress management and behavior based on understanding past behavior to better predict future behavior. All of this can help people have a more successful career, better relationships, more self-confidence and overall better communication.
Explanation:
The South based its economy on the use of slaves for agricultural production of things like cotton and tobacco. The North had significant amounts of industry and other finished goods. The South could supply some of the raw materials for the industry of the North. Regardless, the North relied on paid labor.
frequency's unit is Hz which mean cycles per second
given frequency * wavelength = speed of wave
speed of light = 3x10^8 m/s
wavelength = 680nm = 680x10^-9 m
frequency * 680x10^-9 m = 3x10^8 m/s
frequency = 3x10^8 / 680x10^-9
= 4.41x10^14 Hz
= 441x10^12 Hz
= 441 THz
which is the frequency for red light
