Which type of molecule contains two atoms bonded together A) simple molecule
B) crystal
C) polymer
D) complex molecule

simple molecules contain two atom bonded together

 Simple Molecule

Explanation:  Ambigous question.  What is the scientific definition of "simple molecule?"  More by process of elimination than actual difinition, this is a simple molecule.  It takes a minum of two atoms to make a molecule (by definition).  A crystal is a collection of molecules, a polymer is a chain of molecules, and a complex molecule is, er  . ., complex.  The only reasonable, and best, answer is "simple molecule."

air quality

poor drinking water

and heavy polution

can lead to poor health

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it