Water vapor, h2o in the atmosphere is lighter than the o2 and n2 molecules that make up most of the air. true or false? estimate the 3 relevant atomic weights that justify your answer

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction