Which of the following statement is not true?
a.
Exposure to electromagnetic fields is known to cause leukemia.
b.
Excessive exposure to asbestos can lead to asbestosis.
c.
Excessive exposure to radiations can cause health problems including cancer.
d.
Any sound above 80 dB is potentially dangerous.

The roman empire fell around the 5th century, and as islam spread in the 7th century, trade between europe and china slowed. chinese traders were blocked from westward expansion into europe when the chinese army was defeated by muslim fighters in the area known as syr darya. the trade routes, known as the silk road, fell into disuse, and trade between the far east and europe nearly stopped. it wasn't until the 13th century when the mongols invaded and controlled central asia and large parts of the middle east that extensive trade along these routes was opened again. based upon the paragraph above and your knowledge of the mongols, which of the following statements is correct? a. the mongols unified regions along the silk road, allowing for safe transport of goods. b. muslims controlled busy trade routes into china from the 5th to the 7th centuries. c. without access to european markets, the chinese were unable to obtain raw materials. d. the mongols replaced the roman empire as the dominant force in western europe.

Me im timed! gustavo is completing his homework online. when he uses a computer, what converts the information he inputs into instructions that the operating system understands? the keyboard the bios the cpu the application software

What are the main functions of the human skeleton? a exchange of gases b support and movement c sensing the environment d digestion and excretion