When different types of staple fibers are spun together into a single yarn, the result is a

the answer to your question is b

within 30 of the equator hope this

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )

the correct answer is b