Answer:
B. Amplitude: 30cm; wavelength: 110cm
B.
Asbestos was used in housing for many years because it was cheap to manufacture and was amazingly heat-resistant, but was found to be incredibly dangerous, causing innumerous accounts of lung cancer and related problems.
This is from memory, but I will double check after I answer.
Answer:
Last option
Explanation: B DNA is a good approximation of the structure of DNA found in cells i.e. in both plant and animal cells, the most common structure of DNA observed is the B DNA.