If Earth were in a warming trend, which of the processes below would most likely act as a negative feedback mechanism?

Cold fronts:

When all warm air is lifted aloft in a middle latitude cyclone, we have a(n):

Closely-spaced isobars on a map indicate:

The Earth is closest to the Sun in:

The mixing layer is a(n):

When it is March and spring in the Northern Hemisphere, it is __________ and ___________ in the Southern Hemisphere.

The gas that absorbs most of the harmful ultraviolet radiation in the stratosphere, and is the reason temperature increases with height in the stratosphere, is:

A pressure gradient is which of the following?

During the past 150 years, the average temperature measured around the Earth have been: