Please help. I will give brainliest. I've been on this problem for an hour because noone taught me how to work it.

Which occurs when air is compressed? air molecules move slower. air temperature rises and air molecules move faster. air temperature decreases. air temperature decreases and air molecules move faster.

People keep spending additional units of a particular resource on a want until their marginal benefit is  decreasing withgreater thanless thannot affected by  their marginal cost.

On nights when we see the new moon phase, what side of the moon are we seeing?