In the midwest, record setting cold temperatures often result when a air mass invades the region. mp cp ca mt

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?