What is the basic unit of structure and function of all living organisms

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring