Examine the map of the United States. Tornadoes are most common in the Midwest and Great Plains states. According to the map, what causes the prevalence of tornadoes in these regions? A) Falling air currents form from the mixing of falling warm, moist air and the rising of cold air. B) Spinning air currents form from the mixing of rising warm, moist air and the falling of cold air. C) Spinning air currents form when cold, dry air becomes saturated with moisture and becomes unstable. Eliminate D) Rising air currents form from the deposition of cold air at the surface and moist air at the top of the troposphere.

Which term best describes the form sound takes as it travels away from a drum (a- gas)(b-music) ( c-waves) (d-particles

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.