Atoms in Group 18 elements are inert (chemically unreactive) because . A they combined to form molecules. B they have no valence electrons. C they have filled inner energy levels. D they have a full valence shell.

Explain what will happen if decomposers were apsent from a forest ecoysystem.

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.

Determine the force the sun exerts on an object with a mass of 80.0 kg if that object is on the earth. what is the force exerted by the moon on the same object? what is the force the earth exerts on it?