Which of the following elements has three valence electrons? (2 points) Li
C
Al
Mg

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.