Why do we wear wool fibers in winter?
A. Wool can’t trap air and thus prevent loss of heat from body
B. Wool trap air and prevent loss of heat from body
C. Wool keep us warm by conducting air
D. None of these
Answer:B
Why do we wear wool fibers in winter?
A. Wool can’t trap air and thus prevent loss of heat from body B. Wool trap air and prevent loss of heat from body C. Wool keep us warm by conducting air D. None of these