Which of these is a similarity between a polar and a subtropical jet stream? Both bring in cool air from the poles.
Both are formed at latitudes close to the poles.
Both are formed at latitudes close to the equator.
Both are formed at the boundary of warm and cool air masses.

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 : )

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

maybe because its impossible for balloons to lift a whole entire house.