HELPP A GIRLLL OUTT!! PLEASEEE I WOULD APPRECIATE THAT ! <3 Which element has the same number of electrons in the outermost energy level at Lithium?
A. Hydrogen
B. Beryllium
C. Carbon
D. Magnesium

The crust of earth may a- continets and ocean floors. b-continents only. c-layers of sedimentary rocks and continents. d-all of the above

Particles vibrate in a rigid structure and do not move relative to their neighbors.

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d