Pls help The exact positions of the electrons in an atom cannot be determined because electrons are always what
1.moving
2.sharing
3.changing

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes