What causes the periodicity in the periodic table
A) croutons
B) electrons
C) futons

Answer asap! the weather patterns on earth are shown in this image. explain why there are convection currents; why there are hotter and colder parts of earth.

The unit of resistivity is the: ohm ohm-cm volt coulomb

Organ systems work to maintain homeostasis by creating energy to allow systems to function, releasing hormones to create or end body reactions, and eliminating waste to prevent illness. t or f