At different places on earth, depending on elevation, air pressure varies. which of the following reflects air pressure at any point on earth?
a. carbon dioxide levels in the air
b. the weight of the atmosphere
c. the strength of earth's magnetic field
d. moisture (water vapor) in the air

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )